This guide to “Honeywell Home / Resideo FC100A1037/U Replacement Filter Reference” separates documented facts from details that only your exact filter and equipment can confirm.
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Read the exact part number
Copy the complete FC100A1037/U part number, including any suffix, from the old media frame or the cabinet documentation; honeywell Home / Resideo uses model-specific replacement instructions, so a look-alike filter with the same nominal label is not automatically an equivalent substitute.
| Part number | FC100A1037/U |
|---|---|
| Nominal family | 20x25x4 |
| Published MERV reference | 11 |
| Actual dimensions | Not confirmed for this exact offer |
Cabinet references
The supplied manufacturer research identifies these cabinet or product references: F100 20x25, F200 20x25; before treating one as an approved replacement, compare your cabinet’s full model and revision with the linked current manufacturer document; media can be flexible or cabinet-specific, so the advertised nominal depth alone is not enough.
Rating label nuance
Resideo’s product information identifies FC100A1037/U as MERV 11, while some marketing copy refers to MERV 10 under a stated test condition; this page uses the technical product rating and recommends checking the current specification sheet if a retailer’s description differs.
What is still unverified
For FC100A1037/U, we have not verified a current retail offer, an Amazon ASIN, the precise dimensions of that offer, or its package count; the Amazon search on this page is exploratory, not an exact-product recommendation; use the manufacturer documentation below and inspect the replacement before buying.
Related product search
Amazon search results · No individual product has been verified
Compare the complete manufacturer part number, cabinet revision, dimensions, and package details in each result.
Check each result’s exact model, physical dimensions, MERV rating, and package details before buying. Search results may include unrelated items.
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Search Honeywell Home FC100A1037/U on AmazonRelated size reference
The 20x25x4 nominal-size guide explains the label and shows a separate Filterbuy dimensional example. Do not transfer that example to FC100A1037/U; it describes a different manufacturer’s product.
Sources and review date
The references for Honeywell Home / Resideo FC100A1037/U Replacement Filter Reference were checked on November 4, 2026; product specifications can change, so use the manufacturer’s current instructions for a final purchase or installation decision.
- Resideo / Honeywell Home: FC100A1037/U — 20X25 Media Air Filter ↗
- Resideo / Honeywell Home: FC100A Media Replacement Filters ↗