AprilAire Water Panel 35
OEM part number(s):
35#35
Made by AprilAire. Replacement interval: Replace at least once per heating season (AprilAire guidance via retailers; BestAir: 'Replace at least once per season')..
Exact fit — verified
Fits 47 models
Across 5 brand(s): AprilAire, Armstrong, Clean Comfort, KZ, Lennox. Examples: 2294, 300 (AprilAire), 35-WZ, 350 (AprilAire), 360 (AprilAire), 4125, 4400D, 50012, 560 (AprilAire), 560A (AprilAire), 568 (AprilAire), 600 (AprilAire), 600A (AprilAire), 600M (AprilAire)… — the complete verified fit list is on this page.
Cross-brand equivalents
5 verified equivalent(s): BestAir A35 / A35W; BestAir Pro A35-PR; Honeywell HC26A1008 / HC26E1004 / HC26P1002; Lennox X2661; GeneralAire GA35 — full table below.
Prices checked 2026-11-11: genuine from $14.99 + shipping at HVACDirect · aftermarket from $34.95 + shipping at DiscountFilters. Every price in the table below carries its store and checked date.
Amazon is a buy link, not a price claim: Amazon blocks automated price reads, so its price is never quoted here.
Exact fit — all 47 verified models
Harvested from published manufacturer and retailer fit lists (sources at the bottom of this page). If your exact model is not listed, do not assume fit — check the number on your current part.
AprilAire (15)
300 (AprilAire)
350 (AprilAire)
360 (AprilAire)
560 (AprilAire)
560A (AprilAire)
568 (AprilAire)
600 (AprilAire)
600A (AprilAire)
600M (AprilAire)
700 (AprilAire)
700A (AprilAire)
700M (AprilAire)
760 (AprilAire)
760A (AprilAire)
768 (AprilAire)
Armstrong (6)
4125
H6120
HRVBP-17
HRVBP-17A
HUMD
HWC2-17
Clean Comfort (4)
HE17M
HE17XGR-2
HE17XIN-1
HE17XIN-2
KZ (5)
2294
35-WZ
4400D
50012
AHC35
Lennox (17)
CH33-2119
HUM12
HUM13
HUM14
HUM15
WB-18
WB17
WB2-17
WB2-17A
WB2-18
WB2-18A
WB2-18P
WP2-17
WP2-17A
WP2-18
WP2-18A
WP2-18P
Aftermarket equivalents
| Brand | Part number | Note |
|---|---|---|
| BestAir | A35 / A35W | BestAir metal water pad for the #35 fit |
| BestAir Pro | A35-PR | BestAirPro panel; DiscountFilters lists it as replacing AprilAire #35 and Honeywell HC26 panels |
| Honeywell | HC26A1008 / HC26E1004 / HC26P1002 | Honeywell's panels for the same panel size class (HE260/HE360 family) |
| Lennox | X2661 | Lennox panel for the same fit |
| GeneralAire | GA35 | GeneralAire panel cross-listed for AprilAire 600/700-class and Honeywell HE260–HE365 |
All verified prices
| Kind | Store | Pack | Price | Shipping | Checked |
|---|---|---|---|---|---|
| Genuine OEM | HVACDirect | 1 panel, genuine AprilAire #35 | $14.99 + shipping item $14.99 | Shipping terms at checkout; HVACDirect listed 'call for availability' when checked | 2026-11-11 |
| Aftermarket | DiscountFilters | 2-pack, BestAirPro A35-PR ($17.48 per panel) | $34.95 + shipping item $34.95 | Free shipping on orders $70+ at DiscountFilters; a fee applies below that | 2026-11-11 |
| More prices | DiscountFilters | 2-pack, genuine AprilAire #35 | $44.95 + shipping item $44.95 | Free shipping on orders $70+ at DiscountFilters; a fee applies below that | 2026-11-11 |
| More prices | Lakeshore HVAC | 1 panel, genuine AprilAire #35 | $25.00 + shipping item $25.00 | Shipping terms at checkout | 2026-11-11 |
| More prices | McGuckin Hardware | 1 panel, BestAir A35 (in-store, Boulder) | $15.99 + shipping item $15.99 | In-store price | 2026-11-11 |
Specs
| Dimensions | 10 × 13 × 1.75 in |
| Replacement interval | Replace at least once per heating season (AprilAire guidance via retailers; BestAir: 'Replace at least once per season'). |
| Treatment / media | Metal mesh panel with porous coating that absorbs water for evaporation. |
| Quantity note | One panel per change. |