Filter by BTU band and model family first. Check cabinet width against the furnace or air-handler cabinet (or the plenum). Open the product page for the full title. If two SKUs look identical, we confirm matchups before you buy.

Our titles list model families — not Merit/Elite/Signature labels, and not invented airflow orientations. Start with family and BTU, then open the product page for the exact SKU.

CK40CT is a core ACTIVE family across common capacities and cabinet sizes. Example:CK40CT 36,000 BTU, 17.5" width.

CK40UT are Uncased Coil — use when the install needs that style in the plenum.

CK40HT and CK40DT are ACTIVE in the same CK40 set. Titles say “Coil” only — open the PDP rather than guessing orientation from the letters.

C35CX35 and CHX35 span roughly 14.5–31.5" depending on SKU:

• C35 36,000 BTU, 17.5" width
• CX35 36,000 BTU, 17.5" width
• CHX35 36,000 BTU, 26.5" width

CH23 SKUs show narrower widths in the titles (including 10" examples). If your install needs a cased cabinet coil, confirm that language on the product page or before you buy — we only claim that style where the title already says it.

An indoor coil is a matchup part. It works with afurnaceorair handlerand pairs to an outdoorair conditionerorheat pump. The right combination supports efficiency and a cleaner warranty path; a mismatch hurts both.

We walk anAHRIstyle match before you buy: outdoor model + indoor blower or furnace + coil capacity and width. Certified ratings and SEER2 stay on the matched pair — bring data-plate photos when you shortlist.

Sibling rooms when you still need the outdoor box or blower:air conditionersheat pumpsfurnacesair handlers.

This aisle spans about 18,000–60,000 BTU — roughly 1.5–5 tontonnagebands as a shopping start, not a stamped load calc. Widths include 14.5, 17.5, 21, 26.5, and 31.5" (plus others such as 10, 13, 15.5, 20, 24.5" on the live filters).

Size the coil to the outdoor unit and the indoor cabinet you have (or the blower you are buying with it). When numbers are close or the cabinet is odd, we confirm fitment before you buy.

Filter this aisle, then confirm outdoor and blower pairing before you lock the cart. We confirm the coil matchup before you buy. You complete the purchase online once the SKUs are locked.

Manufacturer coverage and registration depend on the exact coil, the matched outdoor and indoor equipment, and the authorized-channel path for that install. We will confirm warranty years before you buy — no peer-site year tables on this page.

ask when you shortlist before assuming internet-sold equipment carries the same card as a dealer-installed package.

A coil rarely ships as a complete system. A typical matched install needs:

• Matched outdoor condenser or heat pump
• Matched indoor coil from this aisle
• Furnace or air handler, as the design requires
• Line set sized to the actual run
• Condensate drain path; disconnect and whip; thermostat/controls as specified
• Licensed startup, refrigerant charge, and commissioning — not DIY refrigerant work

Freight expectations: see ourshipping policy.

Use the outdoor model, the furnace or air-handler model, and the coil’s capacity and width. We check certified matchups before you buy so you are not guessing ton-for-ton from a blog.

It sits with the furnace or air handler and moves heat between indoor air and the refrigerant loop to the outdoor unit. It is a matchup part — not a stand-alone AC.