Healthy home knowledge

Indoor Air Quality

5 articles

Comparison of prefilter, HEPA filter, and activated-carbon maintenance signs, showing that each filter requires a different replacement decision.

Tankeshwar Acharya

Sep 22, 202612 min

How Often Should You Replace an Air Purifier Filter?

Operating guide showing when to run an air purifier in a bedroom, occupied room, during cooking, and during wildfire smoke.

Tankeshwar Acharya

Sep 22, 202611 min

How Long Should You Run an Air Purifier?

Room diagram showing an air purifier in an open occupied area with clear airflow and warning against placement behind furniture, against curtains, or in a tight corner.

Tankeshwar Acharya

Sep 22, 202614 min

Where Should You Place an Air Purifier for the Best Results?

Comparison showing a HEPA filter capturing airborne particles and activated carbon adsorbing certain gases and odors.

Tankeshwar Acharya

Sep 22, 202613 min

HEPA vs. Activated Carbon Filters: What Does Each Remove?

Bedroom dimensions and an air purifier used to calculate the required smoke CADR from room volume.

Tankeshwar Acharya

Sep 22, 202610 min

Air Purifier Room Size: How Much CADR Do You Need?