No app. Just turn it on. A top rival is the $839 Blueair HealthProtect 7770i, which offers virus and bacteria removal. But those germ filters cost $200 a year to replace, compared to $153 for the ...
The AirDoctor AD3500 pulls off a rare feat: It delivers powerful air-cleaning performance while remaining ultra-portable and easy on the energy bill, making it one of the best air purifiers for large ...
Shocked at the filter replacement cost, I considered only turning the AirDoctor on when there's a wildfire or another burning appliance. But in that case, micropollutants -- caused by cleaning ...
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