Heat pump model numbers starting C4
4 certified units whose model number starts C4, out of every unit in the A to Z. Updated Oct 17, 2026.
A model number that opens with a choice of letters, such as (C,H,T), is listed under the first one.
The units
One row per certified model number. All 4 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| (C,H,T)4H5S30*K*AAA* | central | 30,000 Btu (2.5-ton) | 1 | 1 |
| (C,H,T)4H5S36*K*AAA* | central | 36,000 Btu (3-ton) | 1 | 4 |
| C4H5S30*K*AAA* | central | 30,000 Btu (2.5-ton) | 1 | 1 |
| C4H5S36*K*AAA* | central | 36,000 Btu (3-ton) | 3 | 12 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number