Fujitsu’s cold-climate line, with more than its rated heat at 5 °F and very high certified efficiency, for homes heating through a cold winter.

Holds its full rated heat at 5 °F, heats to −13 °F and carries Daikin’s 12-year registered warranty, among the longest here.
- 12,000 BTUSize
- 13,600 Btu/hHeat at 5 °F
- 100%Kept at 5 °F
- 10.7 / 25.2HSPF2 / SEER2
- Pro installInstall
No store we check sells it online; the maker lists where to buy or who installs it.
- Keeps 100% of its rated heat at 5 °F: 13,600 Btu/h
- 12-year parts and compressor warranty once registered
- Needs a licensed HVAC installer: a self-install voids the warranty
How it scores
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.
Specifications
| Capacity (certified) | |
|---|---|
| Size (nominal) | 12,000 BTU |
| Cooling at 95 °F | 12,000 Btu/h |
| Heating at 47 °F | 13,600 Btu/h |
| Heating at 17 °F (max) | 15,900 Btu/h |
| Heating at 5 °F (max) | 13,600 Btu/h |
| Heat kept at 5 °F | 100% |
| Efficiency (certified) | |
| HSPF2 (Region IV) | 10.7 |
| SEER2 | 25.2 |
| EER2 | 13.2 |
| COP at 5 °F | 2.00 |
| ENERGY STAR | ENERGY STAR Cold Climate |
| AHRI certificate | 212494258 |
| Operating range | |
| Heats down to | -13 °F |
| Cooling range | 50 to 114.8 °F |
| Installation | |
| Installed by | Professional (sold through installers) |
| Line set connection | Flare fittings (vacuum pump needed) |
| Line set | up to 82 ft |
| Voltage | 230 V |
| Refrigerant | R-32 |
| Indoor unit | FTXM12WVJU9 |
| Outdoor unit | RXM12WVJU9 |
| Build | |
| Indoor noise | 23–45 dB(A) |
| Outdoor noise | 49 dB(A) |
| Wi-Fi | Built in |
| Weight | indoor 29 lb / outdoor 96 lb |
| Warranty | 12 yr compressor, 12 yr parts |
Alternatives in this size
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.
A cold-climate unit sold online by Senville that keeps most of its rated heat at 5 °F and heats to −22 °F. Parts cover is 5 years, half the compressor’s 10.
Senville $1,399.99Compare
Compare the Daikin Atmosphera 12,000 BTU with any other mini-split →
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