Air Filter Advisor:
Stop Overpaying, Breathe Better
Find out if your size is standard or custom, the right MERV for your home without choking airflow, whether you can switch to a filter that lasts months instead of weeks, and what actually costs less per year.
Step 1. Your Current Filter
Read the size off the cardboard edge, like 16x25x1. Enter all three numbers.
Measure the slot opening to the nearest quarter inch, we'll round to the standard size sold in stores. The two face measurements can be in either order. For thickness, measure how deep the slot is.
Step 2. Your Home
This is what makes the recommendation actually yours. Check all that apply.
Cost Per Year, and the Hassle
Same clean air goal, very different yearly cost and effort. Prices are typical US estimates.
Some links are affiliate links that support these free tools at no cost to you. Always confirm the size on your old filter before ordering.
Free. Your Filter Plan + Change Reminders
Get your personalized filter schedule, the upgrade checklist, and the simple routine that prevents most breakdowns and keeps bills down.