Honeywell Home FC100A1037 20x25x4.5 MERV 11 Media Filter
The Honeywell FC100A1037 is a factory-assembled rigid box media filter designed for Honeywell 20x25 whole-house air cleaners. Unlike collapsible filters, it requires zero assembly—simply unpack and slide directly into the cabinet track.
3-Year True Cost of Ownership Model
Captures 65–79% of E2 allergens (1.0–3.0μm) with moderate fine smoke capture.
Deep pleat geometry delivers high surface area and minimal static pressure drop.
Thermal beverage board frame with wire backing to prevent media collapse under blower load.
Bulk multi-pack procurement typically reduces annual per-filter cost by 25% to 40%.
- Pre-assembled rigid box design requires zero setup or folding
- Integrated perimeter foam gasket seals against cabinet air bypass
- Deep 4.38-inch pleated depth delivers up to 12 months of service
- Ultra-low pressure drop protects high-tonnage heat pumps
- Rigid box packaging takes more shipping and storage room
- Actual height is 4.38" (check cabinet depth clearance)
Verified Engineering Specifications
| Nominal Dimensions | 20x25x4 | Actual Dimensions | 19.88 x 24.81 x 4.38 in |
|---|---|---|---|
| Filter Depth | 4.38 inch | Media Construction | Continuous hydrophobic polyolefin synthetic pleated fibers |
| ASHRAE MERV Rating | MERV 11 | Proprietary Rating | MPR 1000 Equivalent | FPR 8 |
| Initial Resistance | 0.18 in. w.g. @ 1400 CFM | Airflow Capacity | Whole Home Media Cabinet |
| Replacement Filter Cost | $46.00 | Replacement Interval | Every 12 months |
| Annual Consumable Cost | $46.00/yr (1 filter change per year) | Compatible Equipment | Honeywell F100 and F200 media air cleaners; standard 20x25x4 filter housings |
Our Take on the Honeywell Home FC100A1037 20x25x4.5 MERV 11 Media Filter
Rugged, foolproof, and exceptionally dependable. The rigid frame with integrated gasket strips prevents air bypass and delivers effortless 12-month filtration for Honeywell cabinet owners.
Filtration Performance Note
Captures 85% of particles in the 3.0–10.0 micron range and up to 65% of 1.0–3.0 micron dander and mold spores.
Installation, Airflow Direction & Maintenance Protocol
Open cabinet door, pull old filter out by finger tabs, slide new FC100A in with arrow toward furnace, latch door.
Common Questions About the Honeywell Home FC100A1037 20x25x4.5 MERV 11 Media Filter
What is the actual size of the FC100A1037?
The actual dimensions are 19.94 inches high by 24.88 inches long by 4.38 inches thick.
Can I upgrade to MERV 13 in this cabinet?
Yes. Honeywell offers the FC200E1037, which is the MERV 13 version of this exact same dimensional filter.
Does this filter fit Carrier or Trane cabinets?
It fits many 20x25x4 generic housings, but Carrier and Trane often specify 5-inch thick filters (FC100A is 4.38"). Check your cabinet track depth before ordering.
Compatible Cabinet Media Alternatives
Aprilaire 213 Healthy Home MERV 13 Replacement Filter
When to choose: Direct 20x25x4 compatible fitment offering MERV 13 performance.
Aprilaire 210 Clean Air Filter
When to choose: Direct 20x25x4 compatible fitment with MERV 11 filtration.