Changing your air filter on time keeps dust and pollen from recirculating and helps your HVAC system run cleaner and more efficiently. Here is a simple guide to how often to do it.
A quick rule of thumb
For most 1-inch filters, plan on a change every 1 to 3 months. The exact interval depends on your home and how hard your system works. Here is a rough guide:
- Everyday household, no pets: about every 2–3 months.
- Homes with pets: around every 2 months — dander and hair load the filter faster.
- Allergy-prone homes or heavy use: roughly every 6 weeks to keep dust and pollen from building up.
Signs it is time to change early
Do not wait for the calendar if you notice any of these: the filter looks gray and loaded with dust, airflow from your vents feels weaker, dust builds up on surfaces faster than usual, or your system runs longer to heat or cool. A clogged filter makes your blower work harder, which costs more and wears out equipment sooner.
Make it effortless
The easiest way to stay on schedule is to keep spares on hand. Every Feelair order ships as a 6-pack, so you have a year of replacements ready to go. Shop your size and rating — MERV 8, MERV 11, or MERV 13.