Air & Water
Cleaner air and water at home start with a HEPA air purifier sized for your room and a certified water filter that targets the contaminants in your local water report.
How to choose air & water
- Match air purifier CADR to room size: CADR in cfm should be at least two-thirds of the room's square footage.
- Look for NSF/ANSI 42, 53 or 58 certification on water filters.
- Keep indoor humidity between 30% and 50%.
- Budget for replacement filters before you buy.
Shop air & water by type
- Air Purifiers
- Humidifiers
- Dehumidifiers
- Fans & Air Circulators
- Air Quality Monitors
- Water Filters & Filtration Systems
- Water Softeners
- Replacement Filters
Air & Water FAQs
Do air purifiers really work?
True HEPA purifiers capture at least 99.97% of particles 0.3 microns in size, including dust, pollen and smoke, when sized for the room.
Which water filter removes the most contaminants?
Reverse osmosis systems remove the widest range, including many PFAS, lead and dissolved solids.
Humidifier or dehumidifier?
Use a humidifier when indoor humidity drops below 30%, usually in winter, and a dehumidifier above 50%, usually in basements and humid summers.
