Lennox X2660 Evaporator Pad (Aprilaire 35-size)
OEM part number(s):
X2660
Made by Lennox. Replacement interval: Replace annually..
Exact fit — verified
Fits 4 models
Across 1 brand(s): Lennox. Examples: HCWB2-17, HCWB2-17A, HCWB3-17, HCWB3-17A — the complete verified fit list is on this page.
Cross-brand equivalents
1 verified equivalent(s): AprilAire 35 — full table below.
Prices checked 2026-11-11: genuine from $39.95 + shipping at FiltersFast. 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 4 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.
Lennox (4)
HCWB2-17
HCWB2-17A
HCWB3-17
HCWB3-17A
Aftermarket equivalents
| Brand | Part number | Note |
|---|---|---|
| AprilAire | 35 | The X2660 is the Lennox-branded pad for the AprilAire #35 fit family (same 10 × 13 × 1.625 in size) — see the AprilAire #35 record for the full cross-brand list. |
All verified prices
| Kind | Store | Pack | Price | Shipping | Checked |
|---|---|---|---|---|---|
| Genuine OEM | FiltersFast | 1 panel, genuine Lennox X2660 | $39.95 + shipping item $39.95 | Free economy shipping on orders $99+ (lower 48); a fee applies below that | 2026-11-11 |
| More prices | DiscountFilters | 2-pack, genuine Lennox X2660 | $62.99 + shipping item $62.99 | Free shipping on orders $70+ at DiscountFilters; a fee applies below that | 2026-11-11 |
No Lennox-specific aftermarket price was captured; the AprilAire #35 record carries the aftermarket prices for this pad size.
Specs
| Dimensions | 10 × 13 × 1.625 in (same as AprilAire #35) |
| Replacement interval | Replace annually. |