Very efficient and quiet, for mild winters: it stops heating below 5 °F, so a cold climate needs Fujitsu’s Orion XLTH instead.
No store we check sells it online; the maker lists where to buy or who installs it.
The rating comes from 4 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
| Capacity (certified) | |
|---|---|
| Size (nominal) | 12,000 BTU |
| Cooling at 95 °F | 12,000 Btu/h |
| Heating at 47 °F | 14,000 Btu/h |
| Heating at 17 °F (max) | 13,200 Btu/h |
| Heating at 5 °F (max) | 10,600 Btu/h |
| Heat kept at 5 °F | 76% |
| Efficiency (certified) | |
| HSPF2 (Region IV) | 11.2 |
| SEER2 | 27.5 |
| EER2 | 13.5 |
| COP at 5 °F | 2.39 |
| ENERGY STAR | ENERGY STAR Cold Climate |
| AHRI certificate | 214390708 |
| Operating range | |
| Heats down to | 5 °F |
| Cooling range | 14 to 122 °F |
| Installation | |
| Installed by | Professional (sold through installers) |
| Line set connection | Flare fittings (vacuum pump needed) |
| Line set | up to 66 ft |
| Voltage | 230 V |
| Refrigerant | R-32 |
| Indoor unit | ASUH12KMAS |
| Outdoor unit | AOUH12KMAS1 |
| Build | |
| Indoor noise | 19–42 dB(A) |
| Outdoor noise | 48 dB(A) |
| Wi-Fi | Built in |
| Weight | indoor 22 lb / outdoor 71 lb |
| Warranty | 10 yr compressor, 10 yr parts |
| Warranty with DIY install | No, a licensed installer is required |
For cold-climate homes where a quick-connect install matters more than price: it holds its full heat far colder than other quick-connect units. Flare-connect units match its cold-weather output for much less.
Amazon $2,532 MRCOOL DIY Direct $2,557Full rated heat in deep cold at a fair price, for a self-installer comfortable with a vacuum pump. Della’s Optima Pro has near-identical certified ratings for a little less.
Amazon $1,398 Pioneer Mini Split store $1,398Mitsubishi’s standard line, quiet and efficient, for milder winters: it loses a good share of its heat in deep cold and stops heating at −5 °F.
Compare the Fujitsu Altair 700 12,000 BTU with any other mini-split →
More from Fujitsu: every Fujitsu product ranked.
