Holds its full rated heat at 5 °F, heats to −13 °F and carries Daikin’s 12-year registered warranty, among the longest here.
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) | 18,000 BTU |
| Cooling at 95 °F | 18,000 Btu/h |
| Heating at 47 °F | 21,600 Btu/h |
| Heating at 17 °F (max) | 23,800 Btu/h |
| Heating at 5 °F (max) | 21,600 Btu/h |
| Heat kept at 5 °F | 100% |
| Efficiency (certified) | |
| HSPF2 (Region IV) | 10 |
| SEER2 | 22.7 |
| EER2 | 12.5 |
| COP at 5 °F | 1.80 |
| ENERGY STAR | Not ENERGY STAR |
| AHRI certificate | 212494259 |
| 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 98.5 ft |
| Voltage | 230 V |
| Refrigerant | R-32 |
| Indoor unit | FTXM18WVJU9 |
| Outdoor unit | RXM18WVJU9 |
| Build | |
| Indoor noise | 32–49 dB(A) |
| Outdoor noise | 54 dB(A) |
| Wi-Fi | Built in |
| Weight | indoor 33 lb / outdoor 132 lb |
| Warranty | 12 yr compressor, 12 yr parts |
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 $3,173 MRCOOL DIY Direct $3,205Mitsubishi’s mainstream Hyper-Heat line keeps its full rated heat at 5 °F and heats down to −13 °F. The FX goes further in deep cold and efficiency.
The best value for heating through a cold winter, if you can pull a vacuum yourself or pay someone to. It holds its full rated heat at 5 °F for far less than a quick-connect unit that does the same.
Amazon $1,849.96 Della $1,849.96Compare the Daikin Atmosphera 18,000 BTU with any other mini-split →
More from Daikin: every Daikin product ranked.
