Air quality

REFERENCE Air purifiers can improve air quality, but do these devices help relieve allergies?

REFERENCE We pit air purifiers against ionizers to get to the bottom of what each appliance really does.

Reference Air purifiers are intended to remove pollutants from the air, but how well do they really work?

REFERENCE Can air purifiers help with dust and dust mite allergies?

BUYING GUIDE These are the best air purifiers you can buy in every category, from Levoit Core 600S and BlueAir Blue Pure 411i Max to Dyson Purifier Cool.

BUYING GUIDE These are the best air purifiers for allergies you can buy in every category, from Levoit Core 600S and GermGuardian AC4825E to RabbitAir A3.

Buying Guide These are the best humidifiers you can buy in every category, from Dyson AM10 and Levoit LV600HH to HoMedics TotalComfort Deluxe.

BUYING GUIDE These are the best dehumidifiers you can buy in every category, from Honeywell TP50WK to LG Puricare.