Home › Models › AprilAire 360 (AprilAire)
What filter does a AprilAire 360 (AprilAire) take?
It takes the AprilAire Water Panel 35 — OEM part number 35.
AprilAire 360 (AprilAire), evaporative humidifier, whole house.
Lowest verified price: $14.99 — 1 panel, genuine AprilAire #35 at HVACDirect. Shipping terms at checkout; HVACDirect listed 'call for availability' when checked. Checked 2026-11-11.
Buy the 35 on Amazon — 35Amazon 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 Amazon price is shown on Amazon; we do not quote it here.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 | AprilAire Water Panel 35 |
|---|---|
| Replacement interval | Replace at least once per heating season (AprilAire guidance via retailers; BestAir: 'Replace at least once per season'). |
| Per change | One panel per change. |
| Equivalents | BestAir A35 / A35W, BestAir Pro A35-PR, Honeywell HC26A1008 / HC26E1004 / HC26P1002, Lennox X2661, GeneralAire GA35 |
Verified prices
| Option | Price | Store & shipping |
|---|---|---|
| Genuine (OEM) 1 panel, genuine AprilAire #35 | $14.99 | HVACDirect Shipping terms at checkout; HVACDirect listed 'call for availability' when checked · Checked 2026-11-11 · source |
| Aftermarket 2-pack, BestAirPro A35-PR ($17.48 per panel) | $34.95 | DiscountFilters Free shipping on orders $70+ at DiscountFilters; a fee applies below that · Checked 2026-11-11 · source |
| Genuine (OEM) 2-pack, genuine AprilAire #35 | $44.95 | DiscountFilters Free shipping on orders $70+ at DiscountFilters; a fee applies below that · Checked 2026-11-11 · source |
| Genuine (OEM) 1 panel, genuine AprilAire #35 | $25.00 | Lakeshore HVAC Shipping terms at checkout · Checked 2026-11-11 · source |
| Also checked 1 panel, BestAir A35 (in-store, Boulder) | $15.99 | McGuckin Hardware In-store price · Checked 2026-11-11 · source |
Full record with every price, source and date: AprilAire Water Panel 35 page.
Finding the model number on a AprilAire
Whole-house (furnace-mounted) models: the model number is on the humidifier cover or the side of the cabinet mounted on your ductwork. The water panel number (10 or 35) is printed on the old panel's frame.