Heat pump model numbers starting AB
18 certified units whose model number starts AB, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 18 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| AB-GTMH18-230VO | mini-split | 18,000 Btu (1.5-ton) | 1 | 3 |
| AB-GTMH24-230VO | mini-split | 24,000 Btu (2-ton) | 1 | 3 |
| AB-GTMH36-230VO | mini-split | 36,000 Btu (3-ton) | 1 | 3 |
| AB-GTMH42-230VO | mini-split | 42,000 Btu (3.5-ton) | 1 | 3 |
| AB-GTMR18-230VO | mini-split | 18,000 Btu (1.5-ton) | 1 | 3 |
| AB-GTMR24-230VO | mini-split | 24,000 Btu (2-ton) | 1 | 3 |
| AB-GTMR30-230VO | mini-split | 30,000 Btu (2.5-ton) | 1 | 3 |
| AB-GTMR36-230VO | mini-split | 36,000 Btu (3-ton) | 1 | 3 |
| AB-GTMR42-230VO | mini-split | 42,000 Btu (3.5-ton) | 1 | 3 |
| ABHCI4H4S09 | mini-split | 9,000 Btu | 1 | 1 |
| ABHCI4H4S12 | mini-split | 12,000 Btu (1-ton) | 1 | 1 |
| ABHCI4H4S18 | mini-split | 18,000 Btu (1.5-ton) | 1 | 1 |
| ABHCI4H4S24 | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| ABXCI4H4S09 | mini-split | 9,000 Btu | 1 | 1 |
| ABXCI4H4S18 | mini-split | 18,000 Btu (1.5-ton) | 1 | 1 |
| ABXCI4H4S24 | mini-split | 24,000 Btu (2-ton) | 1 | 2 |
| ABZCI4H4S09 | mini-split | 9,000 Btu | 1 | 1 |
| ABZCI4H4S12 | mini-split | 12,000 Btu (1-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