ACiQ Extreme Heat 9,000 BTU
#6 in 9,000 BTUFull review
ACiQ’s cold-climate line, sold online, keeps most of its rated heat at 5 °F, heats to −22 °F and gets a 12-year compressor warranty once registered. A certified technician has to install it.
The ACiQ Extreme Heat 9,000 BTU rates 4.7 among 9,000 BTU mini-splits; the ACiQ Extreme Heat 12,000 BTU rates 4.6 among 12,000 BTU ones.
ACiQ Extreme Heat 12,000 BTU
#6 in 12,000 BTUFull review
ACiQ’s cold-climate line, sold online, keeps most of its rated heat at 5 °F, heats to −22 °F and gets a 12-year compressor warranty once registered. A certified technician has to install it.
Prices were last checked October 21, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Scores side by side
These two sit in different size classes (9,000 BTU and 12,000 BTU), and each is scored against the reference points for its own class, so a rating says how well each does among its own size peers. How we rank explains each factor.
| Factor weight | ACiQ Extreme Heat 9,000 BTU | ACiQ Extreme Heat 12,000 BTU |
|---|---|---|
| Overall rating | 4.7/5 | 4.6/5 |
| Cold weather 40% | 95 keeps 96% of its heat at 5 °F, heats down to -22 °F | 95 keeps 96% of its heat at 5 °F, heats down to -22 °F |
| Efficiency 30% | 79 12.5 HSPF2, 27.4 SEER2, COP 1.80 at 5 °F | 70 10.5 HSPF2, 25.4 SEER2, COP 1.80 at 5 °F |
| Warranty 20% | 100 12-year compressor, 7-year parts | 100 12-year compressor, 7-year parts |
| Noise 10% | 98 indoor unit from 19.5 dB(A) | 98 indoor unit from 19.5 dB(A) |
Specifications
| ACiQ Extreme Heat 9,000 BTU | ACiQ Extreme Heat 12,000 BTU | |
|---|---|---|
| Capacity (certified) | ||
| Size (nominal) | 9,000 BTU | 12,000 BTU |
| Cooling at 95 °F | 9,000 Btu/h | 12,000 Btu/h |
| Heating at 47 °F | 12,000 Btu/h | 12,000 Btu/h |
| Heating at 17 °F (max) | 12,800 Btu/h | 12,800 Btu/h |
| Heating at 5 °F (max) | 11,500 Btu/h | 11,500 Btu/h |
| Heat kept at 5 °F | 96% | 96% |
| Efficiency (certified) | ||
| HSPF2 (Region IV) | 12.5 | 10.5 |
| SEER2 | 27.4 | 25.4 |
| EER2 | 15.4 | 13.4 |
| COP at 5 °F | 1.80 | 1.80 |
| ENERGY STAR | ENERGY STAR Cold Climate | ENERGY STAR Cold Climate |
| AHRI certificate | 216032334 | 216032335 |
| Operating range | ||
| Heats down to | -22 °F | -22 °F |
| Cooling range | -22 to 122 °F | -22 to 122 °F |
| Installation | ||
| Installed by | Professional (sold through installers) | Professional (sold through installers) |
| Line set connection | Flare fittings (vacuum pump needed) | Flare fittings (vacuum pump needed) |
| Line set | up to 82 ft | up to 82 ft |
| Voltage | 230 V | 230 V |
| Refrigerant | R-454B | R-454B |
| Indoor unit | ACIQ-09W-HH-MD | ACIQ-12W-HH-MD |
| Outdoor unit | ACIQ-09ZPL-HP230C | ACIQ-12ZPL-HP230C |
| Build | ||
| Indoor noise | 19.5–38 dB(A) | 19.5–47 dB(A) |
| Outdoor noise | 56 dB(A) | 56 dB(A) |
| Wi-Fi | Optional module | Optional module |
| Weight | indoor 23.4 lb / outdoor 72.8 lb | indoor 22.9 lb / outdoor 72.8 lb |
| Warranty | 12 yr compressor, 7 yr parts | 12 yr compressor, 7 yr parts |
| Warranty with DIY install | No, a licensed installer is required | No, a licensed installer is required |