Honeywell Electronic Air Cleaner

Current recommended units:

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Updated 2020

Honeywell Electronic air cleaners include the F50, F50F, F300, F300A, F300E range of furnace based whole house purifiers. These electronic whole-house air cleaners work by connecting your home’s central heating furnace/system.

Download the Honeywell manual here: http://customer.honeywell.com/techlit/pdf/PackedLit/69-0756.pdf

honeywell electronic air cleaner

If you are reading this page and looking to replace a unit, then you will be happy to know that Amazon.com still stock the F300 edition for easy replacement.

Honeywell F300E1027 Electronic Air Cleaner, 20" x 20" with Performance Enhancing Post-Filter
  • Media post-filter provides enhanced filtration on select models
  • Solid state power supply is self-regulating and maintains peak efficiency during a wide range of cell dirt loading conditions
  • Low-profile door with test button to check system operation
  • Helps filter efficiency-robbing "gunk" before it coats critical system parts
  • Very low pressure drop

The Honeywell range of electronic air cleaners comes with a 2 stage filter system that cleans the air from your furnace outlet. We have also produced a guide to some of the best Honeywell air purifiers that are not a part of your HVAC system but can be moved from room to room.

1. The first stage is a pre-filter that removes most of the big particles such as lint, dust, and pet dander. If you don’t choose an air cleaner that comes with a pre-filter then you will put too much strain on the main unit. The main filter system should only be used to remove very tiny particles from 0.03 microns to 0.3 microns.

2. The Main filter system of the Honeywell electronic purifiers uses ionization technology to charge the surrounding particles. Honeywell states that their air cleaner will charge all particles that are bigger than 0.3 microns. Once each particle is charged then the Honeywell air cleaner will use charged oppositely charged plates to attract these particles and clean them from the air.

The Benefits of The Honeywell Electronic Air Cleaner

  • As the system uses an ionization technology then you will not have to pay for new filters or replace them.
  • According to the manual, you will only have to wash the filter cells every 6-12 months. To be honest I doubt this a lot and will talk about this later!
  • The manual states the electronic air cleaner will remove 99% of airborne particles however it does not say the size of these particles.
  • Honeywell provides a 10-year guarantee for the coil and a 5-year guarantee for the rest of the air cleaner.

The Downside of the Honeywell Electronic Air Cleaner

  • Ionization technology will attract dust and give it weight but without suitable secondary filters such as a HEPA, they can not all be removed from the air.
  • This Honeywell air cleaner only uses ionization so it will be inefficient at picking up the very smallest of air pollutant particles such as bacteria and viruses. 90% of air particles are bigger than 0.3 microns but the Honeywell range of whole house purifier is only able to pick up particles bigger than 0.3 microns.
  • We have found that ionization purifiers become very inefficient as their filter cells become dirty. We often recommend cleaning them at least once a week rather than the stated 6 months by Honeywell.
  • Whole-house air cleaners are notoriously bad at cleaning your home’s air. The problem comes down to air always following the path of least resistance.

Conclusion: Choosing to replace your old F300 Electronic air cleaners might be great if you are looking to replace an existing system but if you don’t have that system in place then we would recommend going for something more portable that uses HEPA technology as it has been proven again and again to provide significant value when compared to an ionizer based system.

If you are interested in cleaning your air and not investing in something like the Honeywell electronic air cleaner then check out the current air purifiers we currently recommend (all available in 2021 via Amazon.com): 

Air Purifier
Best for Small Room
Best if you have the Budget
Best for Large Rooms
CADR
135 cfm
245 cfm
145 cfm
Technology
H13 HEPA
includes Smart Sensor to see how clean a room is or isn't
Ionizer and HEPA
Features
3 modes and sleep mode
Near silent 23 dBa when on lowest setting
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
8.83 lbs
15 lbs
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
$99.99
$429.00
9 lbs
Best for Small Room
Air Purifier
LEVOIT Air Purifier for Home Allergies and Pets Hair Smokers in Bedroom, H13 True HEPA Filter, 24db Filtration System Cleaner Odor Eliminators, Remove 99.97% Dust Smoke Mold Pollen, Core 300, White
CADR
135 cfm
Technology
H13 HEPA
Features
3 modes and sleep mode
Weight
8.83 lbs
Price
$99.99
More information
Best if you have the Budget
CADR
245 cfm
Technology
includes Smart Sensor to see how clean a room is or isn't
Features
Near silent 23 dBa when on lowest setting
Weight
15 lbs
Price
$429.00
More information
Best for Large Rooms
CADR
145 cfm
Technology
Ionizer and HEPA
Features
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
9 lbs
More information

Therapure Air Purifier Costco

Therapure-air-purifier-costco
A photo of the Therapure offices in Ontario Canada.

Alternative to the Therapure air purifier that are available to buy in 2020:

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Therapure air purifiers are descendants of Sharper Image ionic air purifiers that were super popular back in the day but they now part of the brand ENVION who are part of Boneco a swiss company that has been making purifiers since 1956. 

The Therapure brand of purifiers resides at the lower end of the budget spectrum with most units costing less than $200 with most at around $129.

As with any air purifier review, we are interested in how each unit deals with smoke, dust, pet dander, and pollen. I am also interested in running costs, so how much electricity is used (as many air purifiers will be used 24 hours per day) and the costs of filters (no point buying a cheap unit and then having to spend many $$ on filter replacement.)

Let’s jump into the reviews and find out if therapure air purifiers are worth getting:

1.Envion Ionic Pro Turbo

Envion Ionic Pro 90IP01TA01W Turbo Ionic Air Purifier, 500 sq ft Room Capacity, Black

This air purifier is meant for fairly sized rooms of up to 500 square feet and the price is usually around the $149 range.

From a technlogy point of view, it uses ionisation combined with a fan to add weight to air pollutants through the use of negative ions that then get captured by the steel blades.

It doesn’t use a HEPA filter so the benefit is that you won’t need to replace the filter like you would with a pure HEPA based unit.

You will also need to remember to clean the blades peridoically to keep the unit running at an efficient level.

The other benefit of ionization it is far less loud when in use when compared with a similar HEPA purifier which needs to force the air through the filter to achieve the same job.

Based on customer reviews, some people love the Ionization effect and describe the air as smelling a lot cleaner but their many customers who have issues with the ionization and said it actually had a negative effect on their allergies – so be sure give it a good test before deciding if you want to go for a unit like this. I love that Amazon.com is great with returns just be aware of third party sellers that may charge extra for returns.

Sale
Envion Ionic Pro 90IP01TA01W Turbo Ionic Air Purifier, 500 sq ft Room Capacity, Black
  • SILENT OPERATION - Destroy airborne germs and odors without ambient noise
  • IONIC PURIFICATION - Sanitize & remove 99. 9% of airborne allergens, irritants, and pollutants in your home - plus destroy cold & flu viruses, mold spores, and staph and strep bacteria.
  • 3X CLEAN - Purifies the air in medium to large size rooms (up to 500 square feet) up to three times in one hour. Perfect for the home or office.
  • FOREVER FILTER - Easy to clean, washable filter will save you money and lasts for years.
  • ENERGY EFFICIENT - Sophisticated tower design uses less energy than a compact fluorescent bulb

2.Therapure TPP240

ENVION - Therapure TPP240, Air Purifier Tower with HEPA Type Technology (Graphite)

You can use this air purifier is smaller rooms – maximum of 343 Sq Ft with the price around the $130 mark but varies across the year.

Unlike the pro turbo this unit combines a HEPA with an ionizer and even uses a UV germicidal tech to kill germs and bacteria whilst the HEPA and ionization deals with the pollen and pet dander.

One thing to note is that this unit doesn’t use a true HEPA but is a HEPA type – a true HEPA filter needs to remove 99.97% of particles smaller than 0.3 microns. HEPA type works only on 99% particles above 2 microns. Whilst this difference seems tiny, it really matters when we are dealing with tiny particles that cause allergies like dander and pollen. For this reason, I would say that you should avoid the TPP240 if you want to see benefits for asthma and allergies.

Another thing we noticed is that many of the reviews on Amazon.com shows signs of review manipulation with a Fakespot grade of D, for this reason, we wouldn’t recommend this unit and would suggest you look elsewhere for budget air purifier such as the Levoit H13 that is regularly available for less than $100 and has a true HEPA combined with a carbon filter.

Sale
ENVION - Therapure TPP240, Air Purifier Tower with HEPA Type Technology (Graphite)
  • HEPA AIR PURIFIER: This quality machine effectively reduces mold, smoke, germs, bacteria, viruses, common allergens, pet dander, dust, odor, and chemical gases from the air in your home. The digital display makes it easy to operate.
  • 3X CLEAN: This is made to purify the air in medium to large-sized rooms (up to 343 square feet) up to 3 times in one hour! It has a 3-speed fan setting that lets you select the desired cleaning level. 
  • SANITIZES AND PURIFIES: It cleans the air through patented UV Germicidal technology; CADR: Pollen – 159, Dust – 151, Smoke – 137. The UV light helps reduce airborne germs & bacteria, and its photocatalyst filter helps reduce fumes and chemicals.
  • IONIZES the air in your whole house to help trap airborne particles & more efficiently clean the air. The ionizer comes with a separate on/off button as well as a 24-hour automatic timer. 
  • EASY TO CLEAN FILTER: There is no need to replace the filter, which eliminates the need for costly filter replacement. It is equipped with a clean filter indicator, so you know when it is time to be cleaned.

3.Envion TPP100 compact 360 air purifier

Envion Therapure TPP100 Compact 360 HEPA Type Air Purifier, 2-Speed Grey, 25 Sq Ft Capacity | Removes Odors, Smoke, Mold, Pet Dander, Bacteria And More!

This tiny air purifier is built for very small areas and can be found online at different retailer around the $60 and sometimes comes up at Walmart for $25ish.

Unlike the other 2 therapure purifiers we reviewed here, this doesn’t use UV or Ions and uses the HEPA- style we mentioned previously.

Whilst this unit can be found super cheap, be aware that replacement filters can cost upwards of $32 with shipping.

Whilst this could certainly be an interesting gift for someone at the office, we can’t suggest that this unit is suitable for someone looking to deal with dust or pet allergies – you really just need to spend at least $100 for a unit that could deal with these issues for a fairly small room.

I would suggest taking a hard pass on this air purifier and spending an extra $40 to go for something like the Levoit H13 that we recommended earlier.

Sale
Envion Therapure TPP100 Compact 360 HEPA Type Air Purifier, 2-Speed Grey, 25 Sq Ft Capacity | Removes Odors, Smoke, Mold, Pet Dander, Bacteria And More!
  • REMOVES mold, smoke, germs, bacteria, viruses, common allergens, pet dander & odor from the air in your home; CADR Dust: 30 Pollen: 29 Smoke: 27
  • CLEANS the air in small size rooms (about 115 square feet) up to 3 times in one hour
  • COMPACT - Perfect for small spaces like bathrooms, pantries, offices, cubicles, etc.
  • 100% OZONE FREE. Does not use UV or Ions which produce trace amounts of ozone, a harmful air pollutant.
  • CLEANABLE filter eliminates needs for costly filter replacement.

So should you buy a Therapure air purifier?

It probably won’t come as a surprise in that I don’t recommend you buy any of these air purifiers.

Whilst they are super popular due to the fact that they are stocked in big box stores like Costco, Walmart, Sears…etc they just don’t provide enough value in 2020.

Ionization is a technology I would generally avoid even if it’s not as bad as the old ozone generators of the past – some people find that even small amounts of ozone can make their allergies worse.

The lack of true-HEPA is also a major concern as it feels like customers are duped into thinking its similar to the filters used on American made Austin purifiers – when there is a massive difference between the number of particles that are blocked.

The challenge is that if you want a unit that can deal with a large square foot area as these units you will need to spend at least $100 more – but I think it’s well worth the extra investment.

Be sure to check out my top air purifier recommendations for 2021 (all budgets covered!)

Air Purifier
Best for Small Room
Best if you have the Budget
Best for Large Rooms
CADR
135 cfm
245 cfm
145 cfm
Technology
H13 HEPA
includes Smart Sensor to see how clean a room is or isn't
Ionizer and HEPA
Features
3 modes and sleep mode
Near silent 23 dBa when on lowest setting
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
8.83 lbs
15 lbs
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
$99.99
$429.00
9 lbs
Best for Small Room
Air Purifier
LEVOIT Air Purifier for Home Allergies and Pets Hair Smokers in Bedroom, H13 True HEPA Filter, 24db Filtration System Cleaner Odor Eliminators, Remove 99.97% Dust Smoke Mold Pollen, Core 300, White
CADR
135 cfm
Technology
H13 HEPA
Features
3 modes and sleep mode
Weight
8.83 lbs
Price
$99.99
More information
Best if you have the Budget
CADR
245 cfm
Technology
includes Smart Sensor to see how clean a room is or isn't
Features
Near silent 23 dBa when on lowest setting
Weight
15 lbs
Price
$429.00
More information
Best for Large Rooms
CADR
145 cfm
Technology
Ionizer and HEPA
Features
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
9 lbs
More information

LG Air Purifier Face Mask

LG Air purifier

Everyone around the world is doing their bit to help beat COVID-19 and one major focus has been the use of face masks.

Most common are cloth disposable ones but it looks like the future might be a bit more futuristic.

LG has plans to release the LG Puricare.

It’s not the first time I have seen an air purifier you wear on your face, but usually, the quality is sub-par and not something I would ever recommend.

But with the Puricare coming from a large company like LG, I’m excited to see what they can do.

Technical Specs of the Puricare air purifier mask

  • Two HEPA H13 filters on each side
  • An 820mh battery that lasts 2 hours on high or 8 hours on low.
  • The mask detects your levels of exertion and adjusts air flow to compensate.
  • A UV-LED that is aimed at killing bacteria.

We don’t normally get much attention for new air purifier releases so it was great to see so much press about this from some of the major sites on the web:

Obviously the big reason for this is that we are still in the midst of a global pandemic and any technology that can improve our situation is of interest to a lot of people.

But I wonder if this air purifier mask is that start of an entire category of air purifier?

I would love to see face masks produced by other big players in the air purifier space like Austin, IQAir and Honeywell.

It will be interesting to see if any of the other big players in technology get into making masks – an Apple face air purifier, anyone? or maybe something Onyx from Samsung that makes you look like Darth Vader?

Whilst we wait for the LG Puricare to come to the market, you can still utilize HEPA filters in your home or workplace to fight the Coronavirus. This doesn’t replace any other activity like face mask-wearing but it can help to pick up stray viruses particles in enclosed spaces

Be sure to check out my recently updated recommendations (based on the latest CDC advice) and if you prefer to do your own research then be sure to look for pure HEPA technology and avoid any units that talk about UV light or some other fancy technology. You want to get a unit that cleans the most air for $ spent.

https://www.cnet.com/health/lg-unveils-a-battery-powered-air-purifying-mask/

5 Best Portable Air Cleaners in 2020

Updated 2020:

If you are interested in purchase a new portable air cleaner/purifier, then be sure to check out our recently updated list for 2020. These recommendations are based on an analysis of current customer sentiment and we also make sure to avoid any unit that has active campaigns of vote manipulation.

As of 2021, we produced a in-depth review for Levoit 300 and would recommend anyone looking for a portable air purifier check this out.

1.Best for Most People – LEVOIT Pet Edition
LEVOIT Air Purifier for Home Allergies and Pets Hair Smokers in Bedroom, H13 True HEPA Filter, 24db Filtration System Cleaner Odor Eliminators, Remove 99.97% Dust Smoke Mold Pollen, Core P350 Grey
  • Genuine Replacements: Search for "p350-rf" or "B087R7ZFPB" for levoit 3-in-1 customized pet filter with ARC Formula to ensure excellent performance
  • Perfect Gift for Pet Families: Ideal for pet allergies, improve your air quality and help you and your pets relieve allergic symptoms such as sneezing, coughing, sinuses and heavy breathing. Ozone-free, approved by CARB, ETL listed and CA PROP 65 certified
  • High Powered: The Vortexair Technology offers an increased CADR of 141 CFM / 240 m³/h, handily covering rooms as large as 219 ft2 (20㎡) and refreshing the air 5 times per hour, perfect for bedroom, living room, dining room or pet room
  • H13-Grade True HEPA Filter: Reduces up to 99.97% of harmful air pollutants, smoke, pollen, mold spores, dust mites and other allergens as small as 0.3 microns from the air. This new fine non-woven fabric pre-filter is more effective than other common pre-filters at capturing floating hair, pet fur, pet dander, dust, fibers, lint
  • Sleep Mode & Timer: The QuietKEAP Technology keeps noise levels as low as 24dB. Set a timer for 2, 4, 8, or 12 hours, then turn off the display light to enjoy a perfect and undisturbed night of sleep. The pet lock button prevents your pets from tampering with any of the other buttons or settings

2. Budget Friendly – $75ish Hamilton Beach TrueAir
Sale
Hamilton Beach TrueAir Air Purifier for Home or Office with Permanent HEPA Filter for Allergies and Pets, Ultra Quiet, Black (04386A)
  • High Performance Hepa Grade Filter: Captures 99% of pet dander, dust, dust mites, pollen, and mold / mildew spores as small as 3 microns from the air.
  • Easy to clean: Allergen reducing air purifier has a permanent Hepa-grade filter that easily vacuums clean.
  • Compact, stylish design: Allergen reducing air purifier is perfect in the office or in rooms up to 160 square feet
  • Versatile air care that fits anywhere: Position the unit vertically or horizontally to best fit in your bedroom, den, nursery, hallway or living room at home or at the office.
  • Quiet and powerful: Use whisper clean for extra quiet operation at night, the medium setting or the quick clean setting for more powerful air cleaning.

3. Winix 5500-2 – For those with bigger rooms
Sale
Winix 5500-2 Air Purifier with True HEPA, PlasmaWave and Odor Reducing Washable AOC Carbon Filter
  • True HEPA filter captures 99.97% of airborne pollutants; dust mites, pet dander, pollen and other allergens as small as 0.3 microns
  • Washable AOC Carbon Filter, made from activated carbon granulars for removal of household odors. Decibels 27.8 dB
  • PlasmaWave acts as a permanent filter to safely break down odor, allergens, chemical vapors and other pollutants with no harmful ozone
  • Smart Sensors gauge the air and our Auto Mode adjusts the fan to filter the air as needed; with a sleep mode for silent night time operation
  • CADR rated for 360 square feet room size. Suitable for medium and large rooms; kids bedrooms, family rooms and kitchens

4. Coway Airmega 400 – If you need the very best or the largest space
Sale
Coway Airmega 400 Smart Air Purifier with 1,560 sq. ft. Coverage
  • Coway Airmega 400 room air purifier is designed to accommodate large room sizes up to 1,560 square feet and cleans the air at least two times per hour when used as recommended.
  • Coway Airmega Max2 filter—combined activated carbon and True HEPA filter—captures and reduces up to 99.97% of 0.3 micron particles in the air, including pollen, pollutants and other allergens. It also reduces volatile organic compounds by more than 99% and reduces fumes such as NH3 and CH3CHO. Includes washable and permanent pre-filter to catch larger dust particles.
  • Coway Airmega’s pollution sensor communicates indoor air quality testing in real-time. The brightly colored LED ring lets you know how clean or dirty your indoor air is, every minute of the day.
  • Coway Airmega has five fan modes: Smart, Sleep, Low, Medium and High. Noise level is nearly silent at lower speeds. Max noise at highest setting is 43.2 dB.
  • Coway Airmega is a smart, energy efficient air purifier with a three-setting smart mode to adapt to its surroundings. Fan speed automatically adjusts based on the room’s air quality and lighting conditions to improve air quality.

A portable air purifier can allow you to clean the air in any room of your home, taking the portable unit from room to room as needed. Available in tabletop models, these units can easily sit on a desk in your office and go into your bedroom for sleeping.

portable-air-purifier

Portable air purifiers, like all air filtration systems, remove odors or particles from the air by using a filter, ion generator, or ultraviolet light, depending on your specific needs and desires.

If you can purchase a room air purifier for each room in your home, you may wish to do this. But, the average person doesn’t want or need to have a separate purifier for every room. Some folks that experience extreme allergic reactions to dust or pollen and those who have severe asthma may require the use of larger purifiers in every room of the home to relieve symptoms but many people prefer to own one or two portable air purifiers and move these units into the areas in which they are working, living or sleeping.

Portable air purifiers with HEPA filtration systems remove tiny particulate matter and these units are available with ultraviolet light air cleaning which can kill much of the bacteria and viruses in ambient air as well. The cost of these portable air filter systems is not enormous and the fact that a single quality unit can move with you from room to room makes the investment a sound one.

Purchase a high-quality portable air purifier that cleans as large an amount of air as the estimated air space in the largest space in which you plan to use the system. By calculating the cubic feet of air in the largest space in which the air purifier will be used, you’ll be assured the smaller spaces will be effectively purified when you moved the portable purifiers into those locations for use.

Compare prices on various models of portable air purifiers and read about the way that different types of filtration systems clean the air. If you wish to remove odors but do not need to focus on the removal of allergens, dust, germs, or particulate matter, you may choose a different type of system than if you suffer from breathing problems and need to clean particles from the air. In any case, select the highest quality portable purifier available and compare the cost of purchasing new filters for the units so that you will be easily able to afford to have an effective unit operating any time you need it.

15 Smelliest Liquid Chemicals Known to Man [2020 Update]

Unlike sight or hearing, smell isn’t a sense we rely on in daily life. However, something with a truly foul stench can feel like a swift kick to the face.  

But what are the worst smells out there?

We all know gag at the smell of sick, baby poo or even your bosses wet fart but what is worse than that?

What is the stinkiest thing in the world?

Let’s jump in:

1. Who Me? [Top Secret Non Lethal Chemical Created in WW2.

who_me

During World War II, the Allied Forces created Who Me – one of the most nefarious chemical weapons.  Its purpose: to make the target smell like feces.  The goal: to spray Who Me on German officers, thus embarrassing the Sheppard’s and demoralizing the sheep. Unfortunately, the plan didn’t work. After two weeks, the project was decommissioned because the Allied moles couldn’t avoid smelling just as bad as the targets, thus incriminating themselves.

 

Source

2. Ethyl Mercaptan (ethanethiol)

Ethyl Mercaptan

Ethyl Mercaptan smells like leeks…except much, much worse.  Used in propane to give the odorless fuel a distinct smell, 1 part of Ethyl Mercaptan can be detected – without instrumentation – in 2.8 billion parts of air.  It even has a claim to fame, being ranked as the Guinness Book of World Record’s smelliest substance.

 

Source

3. US Government Standard Bathroom Malador

dirtybathroom

U.S. Government Standard Bathroom Malodor is what nightmares are made of.  One whiff activates your fight or flight response, making your heart beat like a bass drum and your stomach do back flips.  During testing, volunteers would scream in horror and swear at the experimenters. This stuff makes rotten eggs seem like eau de toilette. And strangely, U.S. Government Standard Bathroom Malodor is essentially safe… even though it smells like Death smeared in feces and wrapped in a dead carcass.

 

Source

 

4. Butyl seleno-mercaptan (C4H9SeH)

Skunk

Butyl seleno-mercaptan is the core molecule in a skunk’s spray, making it the bane of men and dogs alike.  Despite its foul stench, it has given mankind one benefit; skunk sprayings have fueled the sale of tomato soup for decades.

 

Source

5. Cadaverine

Cadaverine smells like Death…. literally.  As living flesh decays, amino acids interact and create Cadaverine.  When smelled, most men get a feeling of nausea and repulsion.

 

Source

 

6. Skatole

feces

Here’s a strange fact:  small amounts of skatole is used to flavor vanilla ice cream.  But when it’s not being blended into dairy products, skatole is known for giving human feces part of its odor.  As the easiest smell for mankind to notice (our nostrils are particularly sensitive to skatole), we know when we’re close to stepping/sitting/sleeping in crap… and can better avoid it. Unless it’s hot out and we’ve decided to, you know, eat it.

Source

7. Butyric acid

vomit

The smell of vomit makes most people nauseas – and butyric acid is to blame.  The compound starts to tickle the human nostril at concentrations as low as 10 parts per million.  Other fragrant sources include rancid butter, foot sweat and certain stinky cheeses.

Source

8. Dibutyl Telluride

abandoned train

Dibutyl Telluride has a bit of legend wafting from it.  Story has it that a German chemist, lost in thought, dropped a vile of Dibutyl Tellurid onto the train’s floor.  The vile smashed, releasing a smell that sent every passenger running for the door.  Weeks later, the stench was still so heavy in the train car (despite decontamination attempts) that the car had to be scrapped.

Source

9. Pyridine

coal_tar

Pyridine is colorless, but its stench is quite colorful.  Made from a concoction of bone oil (or coal tar) and various naturally occurring chemical compounds (alkaloids), pyridine has a smell you won’t easily forget.  Ever.

 

Source

10. Putrescine

rotting-rat

Putrescine – picture a dead rat.  Then leave that rat to rot in your wall for a year.  Take that smell, and multiply it by 10 and you have an idea of what putrescine smells like.  In fact, the compound at the heart of putrescine is the same as that created by actual rotting flesh.

If you are worried about smells caused by rotting animal flesh, then you will need an air purifier and humidifier combo – the humidifier to remove the excess liquid in the air and the purifier to clean the smell!

Source

11. Hydrogen selenide

rotten_eggs

Hydrogen Selenide smells like rotten eggs mixed with rotten radishes, and poisons you as it “clings” to the insides of your nostrils.  It is more toxic than Hydrogen Cyanide, and dulls your sense of smell… making it incredibly dangerous on top of being unpleasantly fragrant.

 

Source

12. HN3 – Mustard Gas

mustard-gas-ww1

Mustard Gas doesn’t smell like mustard.  In reality, Mustard Gas induces fear and hysteria in those unlucky enough to encounter it.  Having no antidote, Mustard Gas caused more deaths during World War I than any other chemical weapon despite being less toxic than nerve gas.

13. Trimethylamine oxide,

rotting fish

This chemical is found more commonly in ocean sea life and is the reason that cod starts smell faster than river caught catfish.  This scent is caused by the breakdown in bacteria combined with the fish enzymes. If you ever smelt a week old fish you know how bad this can stink!

Source

14. Ammonia

smelly-armpit

Ammonia is 1 part Nitrogen, 3 parts Hydrogen and all parts repugnant.  Some of the more pleasant liquids with traces of ammonia include concentrated cleaning products, cat piss and human sweat.

Source

 

15. Isovaleric Acid

athletes_foot_danger_smelly

Isovaleric acid has an identity crisis.  On the one hand, the acid gives off at athletic foot smell and makes the body stink of B.O. On the other hand, one of isovaleric acid’s compounds (esters) is used in perfumes due to its fragrant scent.  Let’s just hope you catch it on one of its “up” days.

Source

If you liked this article then be sure to check out my latest list of recommended air purifiers that can be used to remove even the very worst smells from the air. 

Holmes Air Purifier Reviews

Holmes has been making air purifiers since 1982. 

Similar to the Brookstone and Therapure air purifiers, they are often found in big box shops like Walmart, Bed Bath and Beyond, Target, and Costco. 

The general reputation around Holmes air purifiers is that they are decent they are still a budget purifier so they are unlikely to work well in large homes or those with specific medical needs like asthma.

If you are just looking for an air purifier for a small room then a machine from Holmes could be a good option.

One of the big benefits with going with a well-known brand is that they produce their filters are easily available and the Holmes AER1 system allows you to use 5 different filters for your specific needs:

  1. Odor Eliminator – this uses baking soda, carbon, and zeolite to remove particles that cause bad smells in your home.
  2. Total air – this is a HEPA type so great for large particles like dust but not as good as true HEPA than can pick up smaller particles of .3 microns like Pollen.
  3. Allergen Remove – This is their version of true HEPA and would be your choice to use if you had allergies wanted the purifier to clean the air in your bedroom. 
  4. Performance Plus – this is another true HEPA that also includes odor removing elements.
  5. Smoke Grabber – this is a purifier specifically used to remove cigarette smoke from the air. 

This ability to pick the filter for your specific needs is a great way to allow for different use cases for one air purifier model. 

There are a number of Holmes Air Purifiers on the market so we have done a deep dive to look at which are the models that we would recommend. 

As always, we look at customer reviews from around the web and also use analysis to avoid “review manipulation” that is becoming all too common in the modern online shopping world. 

1. Holmes medium or large room purifier [Best for most users]

Holmes kzdkc Large Room 4-Speed True HEPA Air Purifier, Medium, Black

This air purifier comes in two different sizes with the medium room (299 sqft) and large room (349 Sq-ft) and the price is usually not  a massive difference  so we would always recommend going for the large room version (as it clean’s a bigger space.)

The unit uses 3 allergen filters and 3 carbon filters that will need replacing every 6-12 months depending on usage. 

The unit on full power is very loud so be aware but they do include a number of different settings (although the amount of air cleaned per hour will be reduced.)

Many customers found that the carbon filter did a great job of removing animal smells.

The only challenge with this purifier is that the filters do start to add up at around $10 for just one allergen remover filter. 

But in reality, you will always need to replace filters for a HEPA based purifier and the price for Holmes are not outrageous when compared to the competition.

Sale
Holmes kzdkc Large Room 4-Speed True HEPA Air Purifier, Medium, Black
  • 99.97 percent EFFICIENT AT REMOVING ALLERGENS: True HEPA Air Purifier is 99.97 percent efficient in removing airborne allergens as small as 0.3 microns from air passing through the filter
  • IDEAL FOR LARGE ROOMS: This air purifier has a slim design that's perfect for bedrooms, family rooms, or any living space. It is recommended for large rooms up to 349 sq ft.
  • 225 CADR: Air purifier provides a 225 CADR (Clean Air Delivery Rate)
  • ENHANCED CARBON FILTER: Includes 3 replacement filters treated with baking soda to help reduce odors in your home
  • FILTER VIEWING WINDOW: Visipure filter viewing window allows you to see when it’s time to replace your filter

5. Holmes Small Room Purifier [Budget Option]

Holmes Desktop HEPA-Type Filter & Optional Ionizer, Air Purifier, White

Small room air purifier Holmes model HAP242-UC is a HEPA-type filter removes 99% airborne particles and allergens. This particular unit has a carbon filtration which reduces household odors. Has dual-position, slim space-saving design, filter exchange indicator with a 3-speed setting. It is a quiet unit even on the highest setting but the con is that the filters are expensive to replace, which is about every three to four months.

At less than $50 this is not a bad option if your budget is tight but be aware if you are using it in a room bigger than 109 sqft you will save money in the long term with the large or medium room version. 

Holmes Desktop HEPA-Type Filter & Optional Ionizer, Air Purifier, White
  • REMOVES UP TO 99 percent OF AIRBORNE PARTICLES: The Holmes Desktop HEPA-Type Air Purifier with Optional Ionizer captures particles as small as 2 microns from air passing through the HEPA-Type filter, removing up to 99 percent of airborne particles and allergens, such as pollen, dust, mold, pet dander, and smoke from the air so you can breathe more comfortably
  • INCLUDES IONIZER: This Holmes air purifier features an optional air ionizer that helps to bind negative ions to airborne smoke, dust, and pollen to form larger particles that are more easily captured, helping to clean air more thoroughly and tackling odors
  • 70 CADR: Air purifier provides a 70 CADR (Clean Air Delivery Rate)
  • CUSTOMIZABLE SETTINGS: 3 speed settings to help you keep your air clean and pure
  • SLIM DESIGN, IDEAL FOR SMALL ROOMS: Recommended for rooms up to 109 sq. ft.; can be placed vertically or horizontally anywhere, including a table or desktop.

Discontinued Models:

2. HAP1200-U Life Long Tower

Holmes HAP1200-U

The HAP1200-U Life-Long Tower from Holmes doesn’t require filter replacement for it has a built-in washable permanent filter. This HEPA-type filtration system removes 99% of airborne particles, 3 speeds, comes with optional ionizer setting for air freshening and can cover medium size rooms up to 170 square feet. Cons are that the fan tends to rattle on any setting other than the lowest setting. Also, the bright blue light on the fan also makes it difficult to sleep.

3. HAP424- Model

HAP424-U Model air purifier

HAP424-U Model is a HEPA-type air purifier that removes up to 99% of airborne particles including dust, pollen, mold spores and eliminates most household and pet odors with a built-in enhanced filter for baking soda. The slim tower design allows you to place it anywhere in the house, filter change alert system and comes with a 3-speed setting. This medium size unit covers rooms up to 180 square feet. Cons are that while the lowest setting is quiet the other settings are loud as a regular wind fan.

4. Holmes HAP706-U mini tower

Holmes HAP706-U mini tower

Holmes HAP706-U mini-tower removes 99.97% airborne particles and is a true HEPA filter. Slim space-saving tower, three cleaning levels, washable pre-filter that captures larger particles with an optional ionizer to naturally freshen the air. Designed for a small room covers up to 80 square feet. It does put a “new smell” into a room but the con is that it sounds like a regular wind fan on higher speed settings.

So should you get a Holmes Air Purifier?

Back in 2010, Holmes had a large range of different air purifiers that included ionizers and HEPA based systems.

The reality was that is was super confusing with HPA 123 or 654 which didn’t really mean much to average consumer.

Since then, they have moved a far simpler system of small, medium, and large combined with multiple options when it comes to filters.

I personally think this is a good move for Holmes as it allows customers to pick and choose what they need and it does help to keep costs low.

The challenge is that once you start running one of these purifiers for a large amount of time, the costs of filters will add up.

So if you have a fairly low usage need then, by all means, grab one of the recommended Holmes purifiers on this list but if you do have a large need and want to avoid costly filter replacements then I would recommend increasing your budget for something like the Austin Air Purifier that needs filter replacements far less and can deal with much bigger spaces.

Guide to Air Purifier Repair

Indoor air pollution is a fact of life, and in many cases, the air indoors is less healthy than the air outdoors. Between dirt, pet dander, dust, and various microorganisms, indoor air can get quite dirty. Many people use air purifiers to make the air that they breathe inside their homes cleaner. But like every other electronic appliance, air purifiers get dirty, and when that happens they run far less efficiently, but there is a lot you can do to improve its efficiency if you’re reasonably confident do-it-yourselfer.

This air purifier repair guide was based on many years and many different units.

air-purifier-repair Home air purifiers are fairly simple devices, and periodic maintenance according to the instruction manual can keep them running efficiently.

You’ve probably at some point noticed a layer of dust built up on top of your television or on a table in your home and wondered just how much of the stuff there is floating around in the air. Believe it or not, in an average home, every cubic foot of air has some 3,000,000 particles of dust suspended in it!

Air purifiers come in two basic types: mechanical and electronic. With a mechanical air purifier, a fan draws air through one or more filters. Typically, a pre-filter removes the biggest matter (such as pet hair), and then a filter with activated charcoal is next in line to remove odors. The third is usually a high-efficiency particulate air (HEPA) filter, which removes more than 99.97% of particles that are 0.3 microns in diameter or larger.

Electronic air purifiers use a simple device called an electrostatic precipitator to remove particles like pollen and smoke from the air. Electrostatic precipitators charge air particles positively and then traps them on a grid that is negatively charged. This type of air purifier often contains a pre-filter and perhaps an activated carbon filter to get rid of dust and odors as well. Some of them also contain an ionizer, which is not the same thing as an electrostatic precipitator. An ionizer releases negatively charged ions (and sometimes ozone) into the surrounding air to trap dust particles.

3 Possible Air Purifier Problems You Can Repair

Depending on how many different filters and features an indoor air purifier has, a number of things can go wrong. Many of them are simple problems that you can fix yourself. Problems such as a dirty precipitating cell, dry motor bearings, clogged filters and air intake, bent collector plates, or broken ionizer wires can often be fixed right at home.

How to Fix Common Air Purifier Problems

1. Cleaning Grill and Filters

clean air purifier clean fans

For a mechanical air purifier, the first step is to turn the machine off and unplug it from the wall.

Usually there will be release buttons that allow you to remove the intake grill containing the foam pre-filters. Do this and remove the filters. To clean the foam filters, remove them and vacuum them through the grill (so the vacuum won’t attach itself to the filter while you’re using it).

Next, remove the screws that hold the filter housing. Vacuum or clean with a soft cloth. If you use a vacuum, keep the screws and other small parts that could be sucked up by the vacuum away from the part you’re vacuuming.

2. Cleaning the Fan

fan-air-purifier

If you need to get to the fan, take out the long screws that hold the housing together and gently pull the two halves of the housing apart.

The fan will have a locking ring at the end of the motor shaft. Put on a pair of safety goggles and remove the fan by twisting or prying the locking ring, but be very careful that you don’t bend the ring.

Take out the screws that hold the motor housing and the switch together. Pull the motor housing apart so you can see the motor. At this point, the switch module should slide out from the housing. You can clean the parts off with a soft cloth.

3. Replacing Broken Ionizer Wires

Ionizer Wires

You can replace broken ionizer wires with replacement wires. Your owner’s manual for the air purifier will tell you where you can get replacement wires. Making sure that the air purifier is turned off and unplugged, remove the precipitating cell according to the owner’s manual instructions. Generally, you use a pair of needle-nose pliers to disengage the wire spring from the connector on each end. You may need to press down on the connector with a screwdriver to free the wire. then you reverse the procedure to put a new wire in place.

3. Testing the Precipitator Cell

Multimeter

If you want to test the precipitating cell, you need to be familiar with using a multimeter. If you’re not, you probably shouldn’t do this. First, remove the precipitator cell from the machine. Set the meter for Resistance x 1, which may be labeled Rx1 on your meter. Clip one probe to the frame of the precipitator cell, and then touch the other probe to the ionizer terminal, then touch it to one outer collector terminal, and then the other outer collector terminal. If your reading is “1” (which means “infinity”), the cell is working properly. If you get a lower reading, the cell has a short circuit and you need to replace it.

With the right tools and information, you can pretty much repair any of the popular air purifier models such as Blue air, Dyson, Levoit, and even the full range of Honeywell purifiers. If you follow our guide and your purifier still does not work then you will likely have to take it to an electronic appliance specialist.

If after reading this post you decide that it might be easier to just replace your air purifier then be sure to check out the top devices we recommend for 2020:

Be sure to check out my top air purifier recommendations for 2021 (all budgets covered!)

Air Purifier
Best for Small Room
Best if you have the Budget
Best for Large Rooms
CADR
135 cfm
245 cfm
145 cfm
Technology
H13 HEPA
includes Smart Sensor to see how clean a room is or isn't
Ionizer and HEPA
Features
3 modes and sleep mode
Near silent 23 dBa when on lowest setting
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
8.83 lbs
15 lbs
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
$99.99
$429.00
9 lbs
Best for Small Room
Air Purifier
LEVOIT Air Purifier for Home Allergies and Pets Hair Smokers in Bedroom, H13 True HEPA Filter, 24db Filtration System Cleaner Odor Eliminators, Remove 99.97% Dust Smoke Mold Pollen, Core 300, White
CADR
135 cfm
Technology
H13 HEPA
Features
3 modes and sleep mode
Weight
8.83 lbs
Price
$99.99
More information
Best if you have the Budget
CADR
245 cfm
Technology
includes Smart Sensor to see how clean a room is or isn't
Features
Near silent 23 dBa when on lowest setting
Weight
15 lbs
Price
$429.00
More information
Best for Large Rooms
CADR
145 cfm
Technology
Ionizer and HEPA
Features
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
9 lbs
More information

Coway Air Purifier AP-1009

Updated 2020: The Coway AP-1009 is an air purifier from 10 years ago that used a combination of HEPA and pre-filter and was a great unit at the time for fairly large rooms. If you are looking for a replacement for this unit you will be glad to know that Coway is still going and have created a great air purifier with the Coway 400:

I always recommend that you always buy from Amazon.com as they have great return policy in case you have any issues.

Sale
AIRMEGA 300S The Smarter App Enabled Air Purifier (Covers 1256 sq. ft.),Compatible with Alexa
  • Coway Airmega 300S room air purifier is designed to accommodate room sizes up to 1, 256 square feet and cleans the air at least two times per hour when used as recommended. 628 square feet and cleans the air at least four times per hour when used as recommended.
  • Coway Airmega Max2 filter—combined activated carbon and True HEPA filter—captures and reduces up to 99. 97% of 0. 3 micron particles in the air, including pollen, pollutants and other allergens. It also reduces volatile organic compounds by more than 99% and reduces fumes such as NH3 and CH3CHO. Includes washable and permanent pre-filter to catch larger dust particles.
  • Coway Airmega’s pollution sensor communicates indoor air quality testing in real-time. The brightly colored LED ring lets you know how clean or dirty your indoor air is, every minute of the day.
  • Coway Airmega has five fan modes: Smart, Sleep, Low, Medium and High. Noise level is nearly silent at lower speeds. Max noise at highest setting is 43. 2 dB.
  • Coway Airmega is a smart, energy efficient air purifier with a three-setting smart mode to adapt to its surroundings. Fan speed automatically adjusts based on the room’s air quality and lighting conditions to improve air quality.

I have decided to include some old details about the AP-1009 but be aware that it is no longer for sale.

The Coway AP-1009CH Air Purifier is built in Korea by Woongjin Coway. The brand was introduced to the U.S. in 2007, and was rebranded by retailers like Lowes and Sears. Coway dominates the air purifier market in Korea, claiming 40% of sales there. The AP-1009CH is a mid-market product at $279 and is sold by Amazon, Walmart, and AirPurifiersAmerica.com. EPA Energy Star states that the Coway AP-1009CH has a clean air delivery rate (CADR) of 186.9 for dust, 149.9 for smoke, and 203.8 for pollen (for an average of 180). These rates make this air purifier suitable for small and medium rooms.

coway_purifier
The AP-1009CH has a three-stage filter system and four fan speeds, from silent to turbo. The first filter is a washable pre-filter, which is followed by an activated carbon filter for removing odors. The main filter is a 3M HEPA filter that is designed to capture 99.97% of particles greater than 0.3 microns in size. The user manual suggests that when vacuumed regularly the HEPA filter can last up to three years. The pollution indicator is a lamp that goes from blue to red depending on air quality levels. The indicator resembles a mood ring.

This air purifier has a rounded, futuristic shape and is pitched toward women, with floral designs on the product literature. Complaints about the AP-1009CH air purifier have been few, with some users reporting a temporary odor when the machine is switched on for the first time. It is extremely quiet, at only 22.4 decibels, which is suitable for sleeping. It measures 25.8 x 14.3 x 8 inches in size and weighs 13 lbs. It stops automatically when the front cover is open or removed. This air purifier earned the EPA Energy Star rating, using only 37.8 watts on its highest setting. It comes with a one year warranty.

The bottom line is that even though the initial price may seem high, the AP-1009CH has low maintenance costs and energy consumption. It is very attractively designed and suitable for those who want clean air, but it is not powerful enough for those who have serious health issues. The washable carbon filter is fairly light-duty but can tackle odors fairly competently. It is stylishly designed, very quiet, and is considered a good value in terms of price and performance.

Pionair Air Purifier Review

Update 2020

The Pionair air purifier was released in 2004 by the company HealthQuest Technologies, LLC and they released an air purifier to US consumers. 

As you can see from the Google trend graph below, there is a lot less interest now as the company no longer exists and the unit has not been on general sale since 2009.

But there must still be plenty of people who still own a Pionair purifier and it might even still work. The technology used didn’t require filters to work so it’s very unlikely to break.

Pionair

However, there is a major problem with this type of air purifier.

It uses an ultraviolet bulb that emits light with a wavelength of 185nm – which is a part of the ozone generating wavelength and this is terrible for your health and also not great at removing particles from the air (Ionizers air purifiers generate a lot of dust that doesn’t get removed but sits on surfaces.)

In the past, we assumed there was no other way to clean air cheaply but to use this type of ozone technology but in 2020 there are plenty of alternatives.

In fact, I would ask any person still running an ionizer air purifier like the Pionair air purifier then you should consider looking to replace the unit that uses a true HEPA and activated charcoal filtering system. Both of these systems have been shown to provide significant health benefits under laboratory tests and many new units don’t have to cost $100’s of dollars.

As of 2021, I recommend the following air purifier for most people:

Air Purifier
Best for Small Room
Best if you have the Budget
Best for Large Rooms
CADR
135 cfm
245 cfm
145 cfm
Technology
H13 HEPA
includes Smart Sensor to see how clean a room is or isn't
Ionizer and HEPA
Features
3 modes and sleep mode
Near silent 23 dBa when on lowest setting
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
8.83 lbs
15 lbs
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
$99.99
$429.00
9 lbs
Best for Small Room
Air Purifier
LEVOIT Air Purifier for Home Allergies and Pets Hair Smokers in Bedroom, H13 True HEPA Filter, 24db Filtration System Cleaner Odor Eliminators, Remove 99.97% Dust Smoke Mold Pollen, Core 300, White
CADR
135 cfm
Technology
H13 HEPA
Features
3 modes and sleep mode
Weight
8.83 lbs
Price
$99.99
More information
Best if you have the Budget
CADR
245 cfm
Technology
includes Smart Sensor to see how clean a room is or isn't
Features
Near silent 23 dBa when on lowest setting
Weight
15 lbs
Price
$429.00
More information
Best for Large Rooms
CADR
145 cfm
Technology
Ionizer and HEPA
Features
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
9 lbs
More information

According to the literature marketing material at the time – they described the Pionair purifier as:

“The Pionair ion purifier does not have a filter and doesn’t trap airborne particles such as pet dander or hair. In this sense, it is more like an air sterilizer than an air purifier. The Pionair uses negative ionization and photocatalysis to clean the air surrounding the machine. Prices range from approximately $400 to $600, and the machines are made in the U.S. by HealthQuest Technologies in Georgia. A purifier like the Pionair works best in humid environments where conventional high-efficiency particulate air (HEPA) filters don’t work as well, such as damp rooms like basements and bathrooms. In these environments, mold spores and musty smells accumulate, and this is where the Pionair works best.”

The Pionair uses a photocatalytic air purifier that uses titanium dioxide as a catalyst, and an ultraviolet light bulb to create hydroxyl oxidizers. This is a fairly new technology and can be used instead of ozone. The Pionair does not have a fan but draws air in due to a chimney-like effect created by the light bulb. Because there is no fan, the clean air delivery rate is very slow. However, the Pionair is very quiet and is not designed to do the same job as a traditional HEPA air filtration system. The ultraviolet bulb used in the Pionair will have to be replaced after about a year. While the bulbs are fairly expensive, the cost is comparable to the replacement filter costs for traditional air purifiers.

Drawbacks to the Pionair purifier include the steep price compared to the size room it can treat. Also, the Pionair does produce ozone due to a wider wavelength distribution in the ultraviolet bulb. Light with a 254-nanometer wavelength is germicidal, and light with a wavelength if 185 nm is ozone generating. However, the production of a bulb that is made specifically for 254 nm is more expensive, so Pionair elected to include the 185 nm light in its bulb. The biggest drawback is that it is not designed to rid the air of particles, and often it is particles that aggravate allergies. On the other hand, HEPA air cleaners don’t do so well in damp, moldy environments like basements.

Overall, the Pionair ion air purifier is suitable for cleaning the air in fairly small rooms where particle removal is not a high priority. It is small, easily portable, and uses very little electricity (25 watts). Because there is no fan, the unit is very quiet. Though there is no filter, the ultraviolet bulb does have to be replaced periodically. Over three to five years, users will spend a comparable amount on replacement UV bulbs as they would on replacement filters for a traditional air purifier.”

Sun Pure Air Purifier

Alternative to the Sun Pur air purifier that is available to buy in 2021: 

Air Purifier
Best for Small Room
Best if you have the Budget
Best for Large Rooms
CADR
135 cfm
245 cfm
145 cfm
Technology
H13 HEPA
includes Smart Sensor to see how clean a room is or isn't
Ionizer and HEPA
Features
3 modes and sleep mode
Near silent 23 dBa when on lowest setting
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
8.83 lbs
15 lbs
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
$99.99
$429.00
9 lbs
Best for Small Room
Air Purifier
LEVOIT Air Purifier for Home Allergies and Pets Hair Smokers in Bedroom, H13 True HEPA Filter, 24db Filtration System Cleaner Odor Eliminators, Remove 99.97% Dust Smoke Mold Pollen, Core 300, White
CADR
135 cfm
Technology
H13 HEPA
Features
3 modes and sleep mode
Weight
8.83 lbs
Price
$99.99
More information
Best if you have the Budget
CADR
245 cfm
Technology
includes Smart Sensor to see how clean a room is or isn't
Features
Near silent 23 dBa when on lowest setting
Weight
15 lbs
Price
$429.00
More information
Best for Large Rooms
CADR
145 cfm
Technology
Ionizer and HEPA
Features
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Weight
Perfect unit for bigger rooms with a recommended 500 sq. ft.
Price
9 lbs
More information

The Ultra Sun air purifier is a premium-priced air purifier that uses multiple filters as well as ultraviolet technology to clean and sanitize the air. It retails for around $600. A pre-filter removes particles larger than 5 microns in size and is easy to clean with a vacuum cleaner. Next, two layers of gas and odor absorption use activated carbon, zeolite, and potassium permanganate layers make up this filter. The HEPA filter is next. True HEPA filters remove 99.97% of particles that are 0.3 microns in size or larger. The next step in Sun Pure’s filter system is a photocatalytic oxidation chamber. It has a titanium dioxide grid that is activated by ultraviolet light. Photocatalytic oxidation is a new enough technology that its usefulness in-home air purifiers are not really quantified yet.

sun-pure-air-purifier

One of Sun Pure’s marketing angle is that its air purifiers use photocatalytic oxidation to get rid of toxic chemicals in the air as opposed to traditional HEPA filter-based air purifiers, which use carbon filters. Though Sun Pure claims that the machines can purify the air in very large rooms, that figure is only accurate for one air change per hour, which is insufficient for most people. It does, however, purify the air in a room of 300 to 350 square feet with six air changes per hour with the machine set on its highest setting.

The Sun Pure has computerized controls that allow four speeds and seven-room sizes for a total of 28 power settings. Sensors alert the user to airborne contaminant levels with easy to understand green, yellow, and red LED displays so the user can turn the machine off if the air is already clean. The purifier also uses infrared motion detectors that turn the power down when there is less movement in the room.

The Sun Pure air purifier is not the quietest, with 68 decibels (dB) recorded on its high setting and 58 dB in the low setting. Another gripe besides the noise is that the cardboard frame holding the HEPA filter doesn’t seal securely to the chassis, potentially drawing dirty air around the HEPA filter rather than through it.

In summary, the Sun Pure air purifier is expensive but uses both HEPA filtration and photocatalytic oxidation, aimed at removing particles as well as chemicals and odors. It weighs 23 pounds and measures 21.5 x 18.9 x 8 inches, making it unsuitable for placement anywhere other than the floor. It is well made, and maintenance costs are low. Filters and UV bulbs are sold separately so that users can replace one without having to replace all consumables. Its automated controls are very appealing to some users. For those with the budget to accommodate a Sun Pure air purifier, it is certainly worth considering.

Sadly, this product has been discontinued and is no longer available for sale.

If you are interested in finding out the best air purifier available to buy in 2020 then be sure to check out our list of the best available at the moment:

1.Best for Most People – LEVOIT Pet Edition
LEVOIT Air Purifier for Home Allergies and Pets Hair Smokers in Bedroom, H13 True HEPA Filter, 24db Filtration System Cleaner Odor Eliminators, Remove 99.97% Dust Smoke Mold Pollen, Core P350 Grey
  • Genuine Replacements: Search for "p350-rf" or "B087R7ZFPB" for levoit 3-in-1 customized pet filter with ARC Formula to ensure excellent performance
  • Perfect Gift for Pet Families: Ideal for pet allergies, improve your air quality and help you and your pets relieve allergic symptoms such as sneezing, coughing, sinuses and heavy breathing. Ozone-free, approved by CARB, ETL listed and CA PROP 65 certified
  • High Powered: The Vortexair Technology offers an increased CADR of 141 CFM / 240 m³/h, handily covering rooms as large as 219 ft2 (20㎡) and refreshing the air 5 times per hour, perfect for bedroom, living room, dining room or pet room
  • H13-Grade True HEPA Filter: Reduces up to 99.97% of harmful air pollutants, smoke, pollen, mold spores, dust mites and other allergens as small as 0.3 microns from the air. This new fine non-woven fabric pre-filter is more effective than other common pre-filters at capturing floating hair, pet fur, pet dander, dust, fibers, lint
  • Sleep Mode & Timer: The QuietKEAP Technology keeps noise levels as low as 24dB. Set a timer for 2, 4, 8, or 12 hours, then turn off the display light to enjoy a perfect and undisturbed night of sleep. The pet lock button prevents your pets from tampering with any of the other buttons or settings

2. Budget Friendly – $75ish Hamilton Beach TrueAir
Sale
Hamilton Beach TrueAir Air Purifier for Home or Office with Permanent HEPA Filter for Allergies and Pets, Ultra Quiet, Black (04386A)
  • High Performance Hepa Grade Filter: Captures 99% of pet dander, dust, dust mites, pollen, and mold / mildew spores as small as 3 microns from the air.
  • Easy to clean: Allergen reducing air purifier has a permanent Hepa-grade filter that easily vacuums clean.
  • Compact, stylish design: Allergen reducing air purifier is perfect in the office or in rooms up to 160 square feet
  • Versatile air care that fits anywhere: Position the unit vertically or horizontally to best fit in your bedroom, den, nursery, hallway or living room at home or at the office.
  • Quiet and powerful: Use whisper clean for extra quiet operation at night, the medium setting or the quick clean setting for more powerful air cleaning.

3. Winix 5500-2 – For those with bigger rooms
Sale
Winix 5500-2 Air Purifier with True HEPA, PlasmaWave and Odor Reducing Washable AOC Carbon Filter
  • True HEPA filter captures 99.97% of airborne pollutants; dust mites, pet dander, pollen and other allergens as small as 0.3 microns
  • Washable AOC Carbon Filter, made from activated carbon granulars for removal of household odors. Decibels 27.8 dB
  • PlasmaWave acts as a permanent filter to safely break down odor, allergens, chemical vapors and other pollutants with no harmful ozone
  • Smart Sensors gauge the air and our Auto Mode adjusts the fan to filter the air as needed; with a sleep mode for silent night time operation
  • CADR rated for 360 square feet room size. Suitable for medium and large rooms; kids bedrooms, family rooms and kitchens

4. Coway Airmega 400 – If you need the very best or the largest space
Sale
Coway Airmega 400 Smart Air Purifier with 1,560 sq. ft. Coverage
  • Coway Airmega 400 room air purifier is designed to accommodate large room sizes up to 1,560 square feet and cleans the air at least two times per hour when used as recommended.
  • Coway Airmega Max2 filter—combined activated carbon and True HEPA filter—captures and reduces up to 99.97% of 0.3 micron particles in the air, including pollen, pollutants and other allergens. It also reduces volatile organic compounds by more than 99% and reduces fumes such as NH3 and CH3CHO. Includes washable and permanent pre-filter to catch larger dust particles.
  • Coway Airmega’s pollution sensor communicates indoor air quality testing in real-time. The brightly colored LED ring lets you know how clean or dirty your indoor air is, every minute of the day.
  • Coway Airmega has five fan modes: Smart, Sleep, Low, Medium and High. Noise level is nearly silent at lower speeds. Max noise at highest setting is 43.2 dB.
  • Coway Airmega is a smart, energy efficient air purifier with a three-setting smart mode to adapt to its surroundings. Fan speed automatically adjusts based on the room’s air quality and lighting conditions to improve air quality.