Written for anyone who checks the AQI before opening a window. Sized by room, with the filter running cost stated, because that is the number people forget when they buy. (Note: This list contains affiliate links, and I may earn a small commission at...
The value benchmark for a bedroom. Filter life is genuinely long, unlike its rivals.
Airmega 150 Bedroom Air Purifier
Best value at large room sizes, and the display shows live PM2.5.
All Specs, Features of Xiaomi Smart Air Purifier 4 Pro
Quiet on the low setting, which is the only setting you will use at night.
Air Purifier 3000i Series AC3055/51
Covers a big living room and the app tracks the filter honestly.
Levoit Core® 400S-P Smart Air Purifier for Large Rooms
One button, no screen, low running cost. For a small bedroom and nothing more.
Blue Pure 511 | Compact Air Purifier for Small Rooms
Purifier and fan in one, which matters in a hot climate. Expensive per unit of filtration.
Dyson Purifier Cool TP07
The long-standing enthusiast pick. Washable pre-filter cuts the running cost.
Air Purifiers - Winix America Inc
Ugly, loud on high, and it moves more air than anything near the price.
Fits Honeywell Air Purifier HPA300 HPA304
Small footprint for a desk or nursery. Filters cost more than most here.
Air Mini / Mini+ PECO-HEPA Tri-Power Filter
The pre-filter is built for hair. Buy this one if you have a shedding dog.
Levoit Vital 200S-P Smart Air Purifier丨Ideal for Pet Hair
The one hospitals buy. Only worth it for genuine respiratory illness.
HealthPro Plus XE Air Purifier
Buy the filter with the machine. People skip replacement and lose the benefit.
Coway Airmega Mighty AP-1512HH & 200M Filter Set
Cheap PM2.5 readout so you can see whether the purifier is doing anything.
Air Quality Monitor - Temtop
Adds radon and CO2. The CO2 reading explains afternoon headaches in closed rooms.
Airthings View Plus - Smart radon & air quality monitor
Humidity is half the comfort equation and almost nobody measures it.
SwitchBot Thermometer Hygrometer Bluetooth
Dry air makes pollution feel worse. Runs about 25 hours per fill.
Levoit 3L Dual 200S Smart Bedroom Humidifier
For humid climates where damp, not dust, is the problem.
Pro Breeze - Dehumidifiers - The Home Depot
The furnace or AC filter matters more than any standalone unit. Change it quarterly.
