15,000 Btu/h mini- and multi-splits
Rated products: 51 · model numbers: 91 · certified cooling 13,500–16,499 Btu/h
Of the 12 mini- and multi-split size classes on this site, the 15,000 Btu/h class has the second-highest median HSPF2, the second-highest median share kept at 5°F, and the second-lowest share with the EPA cold-climate designation. The Mitsubishi Electric MUZ-FX15NLHZ keeps the largest share of its 47°F capacity at 5°F. The Fujitsu AOUH15KTAP1 lists the top HSPF2.
What the class is made of
Compressor staging
- variable-speed
- 51
Refrigerant
- R-454B
- 15
- R-32
- 17
- R-410A
- 19
Most listed brands: Mitsubishi Electric (15), Fujitsu (8), Daikin (3), GE (3), American Standard / Mitsubishi Electric (2), Hitachi (2), Lennox (2), and Samsung (2).
Highest in the class, rating by rating
| Rating | Highest | Value | Next value down |
|---|---|---|---|
| Kept at 5°F | Mitsubishi Electric MUZ-FX15NLHZ | 134% | Quilt QO1-M2Z18-NC-NA, 133% |
| Output at 5°F | Mitsubishi Electric MUZ-FX15NLHZ | 22,200 Btu/h | Fujitsu AOUH15KZAH1, 21,000 Btu/h |
| COP at 5°F | Mitsubishi Electric SUZ-AA15NL | 3.00 | Mitsubishi Electric SUZ-KA15NA, 2.73 |
| HSPF2 | Fujitsu AOUH15KTAP1 | 13 | Fujitsu AOUG15LZAS1, 12.8 |
| SEER2 | Fujitsu AOUH15KTAP1 | 28.7 | Fujitsu AOUH15KZAH1, 27.5 |
| EER2 | Fujitsu AOUH15KTAP1 | 15.4 | LG KUSAL151A, 15 |
Most heat kept at 5°F
EPA cold-climate designation only.
| Product | Kept at 5°F | Output at 5°F | COP at 5°F | Model numbers |
|---|---|---|---|---|
| Mitsubishi Electric MUZ-FX15NLHZ | 134% | 22,200 Btu/h | 2.06 | 2 |
| Quilt QO1-M2Z18-NC-NA | 133% | 18,000 Btu/h | 2.00 | 1 |
| Mitsubishi Electric MUZ-FS15NA | 121% | 19,400 Btu/h | 2.00 | 3 |
| Mitsubishi Electric MUZ-FS15NAH | 121% | 19,400 Btu/h | 2.00 | 3 |
| Fujitsu AOUG15LZAS1 | 121% | 17,500 Btu/h | 2.52 | 1 |
| Fujitsu AOUG15LZAH1 | 121% | 17,500 Btu/h | 2.34 | 1 |
| Fujitsu AOU15RLFF | 121% | 18,100 Btu/h | 1.84 | 1 |
| Fujitsu AOU15RLFFH | 121% | 18,100 Btu/h | 1.84 | 1 |
| Mitsubishi Electric SUZ-AA15NLHZ | 120% | 18,000 Btu/h | 2.00 | 1 |
| Fujitsu AOUH15KZAH1 | 117% | 21,000 Btu/h | 2.10 | 1 |
Next to the other mini-split sizes
Share of 47°F capacity kept at 5°F: dot = class median, ring = 90th percentile.
Certified as of October 27, 2026.