A
#33
ACIQ ES SERIES (ES-27Z-M3B)
Best for: Official 28,000 Btu/h official cooling, 24.6 official SEER2
5.1/10
What we like
- Official ENERGY STAR record lists 24.6 SEER2.
Watch out for
- Official ENERGY STAR record does not list a cold-climate designation.
Score breakdown
| Official SEER2 | 24.6 |
|---|---|
| Official HSPF2 | 9.5 |
| Official EER2 | 12.7 |
| Official COP at 5°F | 2 |
| Official ENERGY STAR unique ID | 2,448,498 |
| Official outdoor unit model number | ES-27Z-M3B |
| Official indoor unit model number | Not listed |
| Official series name | ES SERIES |
| Official product type | HP - Mini or Multi Split |
| Official cooling capacity | 28,000 Btu/h |
| Official heating capacity at 47°F | 28,000 Btu/h |
| Official heating capacity at 17°F | 21,000 Btu/h |
| Official heating capacity at 5°F | 19,000 Btu/h |
| Official cold-climate designation | No |
| Official ENERGY STAR Most Efficient 2025 | No |
| Official refrigerant type | R-410A |
| Official AHRI reference number | 210857386 |
| Also certified under official brand or model listings | 1HVAC ES-27Z-M3B; Diycool ES-27Z-M3B; Polarwave ES-27Z-M3B; Stealth ES-27Z-M3B |
| Official ENERGY STAR date certified | 04/27/2026 |
| Source-data note | The ENERGY STAR record lists other official indoor-unit matchups with this outdoor model that have different official SEER2, HSPF2, EER2 or COP at 5°F ratings. The scores on this page are for the official combination shown, not those other matchups. |
| Price | Check price |