Fujitsu Altair 700 9,000 BTU
#12 in 9,000 BTUFull review
Very efficient and quiet, for mild winters: it stops heating below 5 °F, so a cold climate needs Fujitsu’s Orion XLTH instead.
The Fujitsu Altair 700 9,000 BTU is the better mini-split overall, rated 4.2 to 3.9. The Fujitsu Altair 700 9,000 BTU leads on cold weather.
Fujitsu Altair 500 9,000 BTU
#16 in 9,000 BTUFull review
Fujitsu’s mainstream line for cooling and mild-winter heating, with a 10-year registered warranty. It stops heating below 5 °F.
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.
Which should you buy?
- Choose the Fujitsu Altair 700 9,000 BTU for cold weather (keeps 86% of its heat at 5 °F, heats down to 5 °F vs keeps 71% of its heat at 5 °F, heats down to 5 °F).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every 9,000 BTU mini-split; a clear win is highlighted. How we rank explains each one.
| Factor weight | Fujitsu Altair 700 9,000 BTU | Fujitsu Altair 500 9,000 BTU |
|---|---|---|
| Overall rating | 4.2/5 | 3.9/5 |
| Cold weather 40% | 43 keeps 86% of its heat at 5 °F, heats down to 5 °F | 25 keeps 71% of its heat at 5 °F, heats down to 5 °F |
| Efficiency 30% | 97 12.6 HSPF2, 30 SEER2, COP 2.32 at 5 °F | 93 10.8 HSPF2, 26 SEER2, COP 2.29 at 5 °F |
| Warranty 20% | 100 10-year compressor, 10-year parts | 100 10-year compressor, 10-year parts |
| Noise 10% | 100 indoor unit from 19 dB(A) | 100 indoor unit from 19 dB(A) |
Specifications
| Fujitsu Altair 700 9,000 BTU | Fujitsu Altair 500 9,000 BTU | |
|---|---|---|
| Capacity (certified) | ||
| Size (nominal) | 9,000 BTU | 9,000 BTU |
| Cooling at 95 °F | 9,000 Btu/h | 9,000 Btu/h |
| Heating at 47 °F | 12,000 Btu/h | 10,000 Btu/h |
| Heating at 17 °F (max) | 12,600 Btu/h | 9,000 Btu/h |
| Heating at 5 °F (max) | 10,300 Btu/h | 7,100 Btu/h |
| Heat kept at 5 °F | 86% | 71% |
| Efficiency (certified) | ||
| HSPF2 (Region IV) | 12.6 | 10.8 |
| SEER2 | 30 | 26 |
| EER2 | 16.4 | 12.5 |
| COP at 5 °F | 2.32 | 2.29 |
| ENERGY STAR | ENERGY STAR Cold Climate | ENERGY STAR |
| AHRI certificate | 214390707 | 215212609 |
| Operating range | ||
| Heats down to | 5 °F | 5 °F |
| Cooling range | 14 to 122 °F | 14 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 66 ft | up to 66 ft |
| Voltage | 230 V | 230 V |
| Refrigerant | R-32 | R-32 |
| Indoor unit | ASUH09KMAS | ASUH09KPAS |
| Outdoor unit | AOUH09KMAS1 | AOUH09KPAS1 |
| Build | ||
| Indoor noise | 19–42 dB(A) | 19–42 dB(A) |
| Outdoor noise | 44 dB(A) | 46 dB(A) |
| Wi-Fi | Built in | Optional module |
| Weight | indoor 22 lb / outdoor 71 lb | indoor 21 lb / outdoor 51 lb |
| Warranty | 10 yr compressor, 10 yr parts | 10 yr compressor, 10 yr parts |
| Warranty with DIY install | No, a licensed installer is required | No, a licensed installer is required |