Heat pump model numbers starting EC
20 certified units whose model number starts EC, out of every unit in the A to Z. Updated Oct 17, 2026.
The units
One row per certified model number. All 20 in this group are listed; nothing is held back for a second page.
| Model number | Type | Size class | Brands | Certified pairings |
|---|---|---|---|---|
| ECO-12K | central | 12,000 Btu (1-ton) | 1 | 1 |
| ECO-18K | central | 18,000 Btu (1.5-ton) | 1 | 1 |
| ECOSZ109DA | mini-split | 9,000 Btu | 1 | 1 |
| ECOSZ118DA | mini-split | 18,000 Btu (1.5-ton) | 1 | 1 |
| ECOSZ124DA | mini-split | 24,000 Btu (2-ton) | 1 | 1 |
| ECOSZ130DA | mini-split | 30,000 Btu (2.5-ton) | 1 | 1 |
| ECUO-18E | central | 18,000 Btu (1.5-ton) | 1 | 4 |
| ECUO-18H | central | 18,000 Btu (1.5-ton) | 1 | 6 |
| ECUO-24E | central | 24,000 Btu (2-ton) | 1 | 25 |
| ECUO-24H | central | 24,000 Btu (2-ton) | 1 | 25 |
| ECUO-30E | central | 30,000 Btu (2.5-ton) | 1 | 1 |
| ECUO-30H | central | 30,000 Btu (2.5-ton) | 1 | 10 |
| ECUO-33H | central | 36,000 Btu (3-ton) | 1 | 1 |
| ECUO-36E | central | 36,000 Btu (3-ton) | 1 | 3 |
| ECUO-36H | central | 36,000 Btu (3-ton) | 1 | 13 |
| ECUO-42H | central | 42,000 Btu (3.5-ton) | 1 | 1 |
| ECUO-48E | central | 42,000 Btu (3.5-ton) | 1 | 4 |
| ECUO-48H | central | 42,000 Btu (3.5-ton) | 1 | 6 |
| ECUO-60E | central | 48,000 Btu (4-ton) | 1 | 2 |
| ECUO-60H | 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