Heat pump model numbers starting GK
6 certified units whose model number starts GK, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 6 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| GK-H02TC/NHA-D(U) | central | 24,000 Btu (2-ton) | 1 | 1 |
| GK-H03TC/NHA-D(U) | central | 36,000 Btu (3-ton) | 1 | 1 |
| GK-H04TC/NAA-T(U) | central | 48,000 Btu (4-ton) | 1 | 1 |
| GK-H04TC/NHA-D(U) | central | 48,000 Btu (4-ton) | 1 | 1 |
| GK-H05TC/NAA-T(U) | central | 54,000 Btu (4.5-ton) | 1 | 1 |
| GK-H05TC/NHA-D(U) | central | 54,000 Btu (4.5-ton) | 1 | 1 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number