Home airflow, kept simple

Don't guess.
Know your filter.

FilterBeacon helps you remember what your HVAC system needs, when it needs it, and where to find the right replacement.

Set my replacement date →Why filter timing matters ↓
✦Built for real homes, rentals, and busy people.
NEXT CHECKEXAMPLE
18days

in this sample schedule

▤16 × 25 × 1Hallway return · MERV 8↗
✓ Plan your next check
⌁ One less thing to remember

01 / Your next change

Put the date
on the beacon.

Start with one filter. We'll estimate your next replacement date using the interval you choose.

FILTER CHECK-IN

Plan your next replacement

01 / 01

The 90-day starting value is a planning estimate. Follow your filter and equipment instructions, check the filter monthly, and replace it sooner if dirty. After calculation, these details stay only on this device.

02 / The useful stuff

Small filter.
Big difference.

01

The size on the frame is the starting point.

Check the cardboard edge or the slot door before you shop. Nominal sizes can differ from the actual measured size.

Learn how to measure ↗
02

More filtration is not always better.

MERV ratings describe particle capture. Your system still needs enough airflow—when in doubt, check the equipment manual or ask an HVAC professional.

Understand MERV ratings ↗
03

A reminder beats a last-minute scramble.

Keep the size, location, and date together so the next replacement is a two-minute task instead of a Saturday project.

Build a better routine ↗
Keep your date handyAfter calculation, your filter details are saved only in this browser when storage is available. You can clear them above. We do not send email or text reminders. Download your calendar reminder or copy the details to keep your plan handy. If you leave “Last changed” blank, the estimate starts from today.