Maintenance · Filters

Stop guessing when to swap your filter.

Your ideal interval depends on filter MERV, pets, allergies, and how many people are home. We do the math and hand you a calendar reminder that recurs on schedule.

Filter MERV ratingPrinted on the filter frame. Most homes run MERV 8–13.

Pets in the home

Household size

Someone in the home has allergies or asthma

A clogged filter is the #1 preventable cause of no-heat calls we see in January. If yours looks grey, replace it — regardless of what a schedule says.

Replace every

55 days

That's roughly 7 filters per year for one return.

Or let us handle it — see plans