Review on RENPHO Large Room Air Purifiers up to 1210 sq.ft, PM2.5 Air Quality Monitor, Auto Mode, Child Lock, H13 True HEPA Filter Cleaner for 99.97% Allergens, Smoke, Dust, Pollen, Pet Hair by Shirley Johnson

I have a RENPHO air purifier to replace an aging and poorly performing air filter unit that I have had for over 10 years. It filters large spaces. and has a 4-in-1 filtration design. The digital panel displays real-time PM2.5 readings. I like the automatic feature that adjusts fan speed to compensate for air quality issues. We burned a sage stick in an upstairs room and the downstairs unit recognized it almost immediately and turned the fan on high. Love the sleep function if you have it in the bedroom. The volume is lower and the light is not intrusive. Overall it has a lot of great features and the replacement filters won't cost you a penny. It's a good choice.