What filter does a Holmes HM1000 take?
It takes the Holmes HWF-55 Filter (also covers HWF-45 fitments) — OEM part number HWF-55.
Holmes HM1000, evaporative humidifier, tabletop.
Lowest verified price: $14.95 — aftermarket, 2-pack, Filters Fast H55-C at FiltersFast. Free economy shipping on orders $99+ (lower 48); a fee applies below that. Checked 2026-11-11.
Buy the HWF-55 on Amazon — HWF-55Amazon search for the exact part number (no single listing is endorsed). Amazon price is shown on Amazon; we do not quote it here.
The part, in brief
| Part | Holmes HWF-55 Filter (also covers HWF-45 fitments) |
|---|---|
| Replacement interval | Replace every 3 months (FiltersFast); filter life 4–6 weeks (FiltersFast specs); at least once per humidification season (DiscountFilters). |
| Per change | HWF-45 note: the HWF-45 fitment (HM-1550, HM-1555) is served by this same wick per the BestAir Pro and RPS charts — HWF-45 had no standalone retailer product page, so it is carried here as an alias rather than its own record. |
| Equivalents | BestAir H55-C, Filters Fast H55-C, Accumulair UFH55C, Magnet HOL55FA |
Verified prices
| Option | Price | Store & shipping |
|---|---|---|
| Aftermarket 2-pack, Filters Fast H55-C | $14.95 | FiltersFast Free economy shipping on orders $99+ (lower 48); a fee applies below that · Checked 2026-11-11 · source |
| Also checked 2-pack replacement (4-pack $44.95, 6-pack $54.95 also listed) | $26.99 | DiscountFilters Free shipping on orders $70+ at DiscountFilters; a fee applies below that · Checked 2026-11-11 · source |
No genuine Holmes-branded price was verified for this filter (the pattern across the whole Holmes line) — aftermarket prices only, labeled as such.
Full record with every price, source and date: Holmes HWF-55 Filter (also covers HWF-45 fitments) page.
Finding the model number on a Holmes
Model numbers are on the bottom of the unit, starting with 'HM'. Holmes, Sunbeam and Bionaire are sister brands (Newell) and share wick fitments — the filter 'type' letter (A/B/C/D/E) is printed on the old filter's packaging and in the manual.