The Panasonic F-P15HU2 air purifier retails for around $540. It is a small air purifier with a high efficiency particulate air (HEPA) filter (model F-Y15XS, $36) and a charcoal filter (model F-Y55XS, $28). This is an automatic, electronic air purifier that is a good choice for a single room. For its price range, the F-P15HU2 is quiet. When set on a low, but still useful, air volume exchange rate, it is quiet enough for undisturbed sleep. Rated as a "best buy" by consumerguide.com, the F-P15HU2 does not include a pre-filter that some air purifiers use as protection for the main HEPA filter. However, it does have a pre-filter layer attached onto the HEPA filter that can be cleaned easily. The HEPA filter removes 99.97% of airborne particles of 0.3 microns in size and larger, though on high speed, there is some loss of efficiency. The deodorizing filter has activated charcoal and lasts up to one year.
With three fan speeds, plus a "super" burst mode setting for quick particle removal, the F-P15HU2 claims a clean air delivery rate (CADR) of 150 and will clean rooms of up to 216 square feet. The decibel levels on each of the four speeds, starting with the highest are: 56 dB, 48 dB, 40 dB, and 30 dB. The sensor monitors particle levels and lights up LED lights on the monitor to indicate the approximate particulate level. The more red LED lights that are lit up, the dirtier the air. The fan will automatically work faster until the air is cleaned. When the air has been suitably cleaned, the LED lights turn green, and the fan speed slows. It can also be used in timer mode to turn on and off at specified times, and it has an interval mode for energy savings.
User-reported drawbacks of the F-P15HU2 include energy use, which is 101 watts on the highest speed, down to 43 watts on the lowest. Automatic controls, timer mode, and interval mode can effect some energy savings. Some users report that replacement filters can be hard to find, so it may be wise to find a supplier online or elsewhere before committing to the F-P15HU2. The carbon filter does not have carbon volatile organic compound (VOC) capability, so it is not tops at removing odors and gases from the air.
Overall, the F-P15HU2 is highly ranked by users, earning five stars out of five from seven Amazon customers. It is a compact (15 5/8 x 21 1/4 x 6 inches) and convenient design with a cord that’s just over eight feet long. It will fit on shelves and wide window sills and weighs about 14 lbs.