Honeywell F100F2025 Replacement Filter

Quick answer: The F100F2025 is Honeywell’s 20x25 media cabinet. It takes FC100A1037-size media — our 20x25x5 "H" line matches that footprint (about 19⅞ × 24¾ × 4⅜ in). Available in MERV 8 through 15, carbon options included.

Shop 20x25x5 Honeywell-compatible filters →

Install in three steps

1. Slide the old media out of the cabinet. 2. Note the airflow arrow — it points toward the furnace. 3. Slide the new filter in, arrow the same direction, close the door. Done.

F100F2025 FAQ

What filter replaces the Honeywell F100F2025?

The F100F2025 is Honeywell’s 20x25 media cabinet. It takes FC100A1037-size media — our 20x25x5 "H" line matches that footprint (about 19⅞ × 24¾ × 4⅜ in).

How do I install it?

Three steps: slide the old media out of the cabinet, note the airflow arrow on the frame, slide the new one in arrow-pointing the same way, and close the door. No tools. Takes about a minute.

How often should I replace it?

Every 6–12 months. Deep-pleat media holds roughly a year of dust in most homes — change sooner with pets, allergies, or after wildfire smoke. Shipping costs the same on 1, 2 or 3 packs, so most customers stock 2 years at once.

American-made by our manufacturing partners. Built here. Breathe better.