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What filter does a Honeywell HE105 take?
It takes the Honeywell HC22E1003 AgION Pad (AprilAire #45 fit) — OEM part number HC22E1003.
Honeywell HE105, whole-house humidifier, whole house.
Lowest verified price: $15.50 — aftermarket, 2-pack replacement for HC22E1003 at DiscountFilters. Free shipping on orders $70+ at DiscountFilters; a fee applies below that. Checked 2026-11-11.
Buy the HC22E1003 on Amazon — HC22E1003Amazon 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 Amazon price is shown on Amazon; we do not quote it here.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 | Honeywell HC22E1003 AgION Pad (AprilAire #45 fit) |
|---|---|
| Replacement interval | Replace annually. |
| Per change | Sold as a 2-pack at DiscountFilters. |
| Equivalents | AprilAire 45, BestAir A45 |
Verified prices
| Option | Price | Store & shipping |
|---|---|---|
| Genuine (OEM) 2-pack, genuine Honeywell HC22E1003 ($9.48 per panel) | $18.95 | DiscountFilters Free shipping on orders $70+ at DiscountFilters; a fee applies below that · Checked 2026-11-11 · source |
| Aftermarket 2-pack replacement for HC22E1003 | $15.50 | DiscountFilters Free shipping on orders $70+ at DiscountFilters; a fee applies below that · Checked 2026-11-11 · source |
Full record with every price, source and date: Honeywell HC22E1003 AgION Pad (AprilAire #45 fit) page.
Finding the model number on a Honeywell
Model numbers are on the bottom of the base or on a sticker on the back of the tower. The letter at the end is the color: B = black, W = white (for example HEV615B is the black tower, HEV615W the white one). Filter letters: A = HAC-504, T = HFT600, R = HAC-504AW-class refill.