Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey) vs SHARP Air Purifier and Humidifier. Plasmacluster Ion Technology and Triple Filtration, including True HEPA Filter. Covers up to 1,650 sq. ft. for Large Rooms, for Dust, Smoke, and Pollen. KC860U

#3 in Air Purifiers

N/A

Noctua NF-P12 redux-1700 PWM, High Performance Cooling Fan, 4-Pin, 1700 RPM (120mm, Grey)

$16.45

“computer fan CR boxes are the absolute best on the market... If a fan dies, you replace it (15$). The filters become saturated, you replace them (30$ vs 80$+). And most of all: CADR per dB. ... whispe”

#7 in Air Purifiers

Sharp

SHARP Air Purifier and Humidifier. Plasmacluster Ion Technology and Triple Filtration, including True HEPA Filter. Covers up to 1,650 sq. ft. for Large Rooms, for Dust, Smoke, and Pollen. KC860U

$567.45

“Sharp plasma cluster is legit. They sold over 100 million modules. It might actually be effective (minimally) inside a fridge where it's a completely enclosed environment.”