Heat pump model numbers starting GL
17 certified units whose model number starts GL, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 17 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| GL-M18/O | mini-split | 18,000 Btu (1.5-ton) | 1 | 1 |
| GL-M24/O | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| GL-M27/O | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| GL-M36/O | mini-split | 30,000 Btu (2.5-ton) | 1 | 1 |
| GL12K115-O | mini-split | 12,000 Btu (1-ton) | 1 | 1 |
| GL12K230-O | mini-split | 12,000 Btu (1-ton) | 1 | 1 |
| GL18K230-O | mini-split | 18,000 Btu (1.5-ton) | 1 | 1 |
| GL24K230-O | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| GL9K115-O | mini-split | 9,000 Btu | 1 | 1 |
| GL9K230-O | mini-split | 9,000 Btu | 1 | 1 |
| GLZS5BA1810A | central | 18,000 Btu (1.5-ton) | 1 | 4 |
| GLZS5BA2410A | central | 24,000 Btu (2-ton) | 1 | 2 |
| GLZS5BA3010A | central | 30,000 Btu (2.5-ton) | 1 | 2 |
| GLZS5BA3610A | central | 36,000 Btu (3-ton) | 1 | 2 |
| GLZS5BA4210A | central | 42,000 Btu (3.5-ton) | 1 | 2 |
| GLZS5BA4810A | central | 48,000 Btu (4-ton) | 1 | 2 |
| GLZS5BA6010A | central | 54,000 Btu (4.5-ton) | 1 | 3 |
Other groups
Every model number group, A to Z
Find a model by its number, its indoor unit, or its AHRI number