Find your filter
Answer a few questions.
Free homeowner tool
Find Your Home Air Filter Size in Under 60 Seconds
Answer a few quick questions and Filter Wizard will help estimate your filter size and replacement schedule.
- ✓ No payment today
- ✓ No spam
- ✓ Built for homeowners
Free Filter Finder
Not sure what size filter your home needs?
Start here.
Step 1 of 4
Do you already know your filter size?
Where is your filter located?
Most filters have the size printed on the cardboard edge. Look for numbers like 20x25x1.
What applies to your home?
This helps us suggest a replacement schedule that fits your home.
Want us to email your result?
Your recommendation will be shown on this page either way. Enter your email if you want us to save it and send future launch updates.
Your Result
Your Filter Recommendation
Your estimate is based on the answers you provided.
We could not email your result, but your recommendation is shown below.
Estimated Filter Size
Check before ordering
Size confirmation needed
Check the printed size on your current filter's cardboard edge before ordering.
Recommended Replacement Schedule
Every 60-90 days
Recommended Filter Type
MERV 8
MERV 8: Best for most standard homes.
Estimated Reminder Months
How it works
Three simple steps
Get your estimate
See your filter size and schedule.
Save it by email
Get launch updates if you want them.
Early Access
Never forget your air filter again.
Get early access to Filter Wizard reminders and delivery when we launch.
You are on the early access list.
We will email launch updates and let you know when Filter Wizard is ready.