And if you’re not a Dyson stan, there are great deals from Levoit and Blueair, too. Dyson Purifier Hot+Cool HP1 — $529.95 (was $599.99) Dyson See ItIt clears 99.97% of allergens and pollutants, then cools or heats your space depending on the season. Dyson Purifier Big+Quiet Formaldehyde BP03 — $849.99 (was $999.99) Dyson See ItBig room? This one’s designed to move air across a wide space while quietly removing indoor pollutants, including formaldehyde. More air purifier deals