Mitsubishi Electric PUZ-AK42NL
EPA category: Mini or Multi Split · 42,000 Btu/h class · variable-speed · R-454B (GWP:470 | Lower GWP)
Model number as listed: PUZ-AK42NL*** · Series as listed: P series
Among the 43 rated 42,000 Btu/h mini- and multi-split outdoor units on this site, the Mitsubishi Electric PUZ-AK42NL lists the joint highest COP at 5°F. The PUZ-AK42NL also lists one of the 2 lowest shares of 47°F capacity kept at 5°F. The Mitsubishi Electric PUZ-AK42NL2 lists the same COP at 5°F.
Place in the 42,000 Btu/h class
EPA cold-climate designation: No. None of its 3 certified matches carries it. About the designation.
Its neighbors at 5°F
| Product | Kept at 5°F | Output, Btu/h | COP at 5°F | HSPF2 |
|---|---|---|---|---|
| TCL H42FMH22XQC | 74% | 31,000 | 2.00 | 10 |
| TCL TMH42HDI2NAO0U25 (SEER2 20) | 74% | 31,000 | 2.00 | 10 |
| TCL TMH42HDI2NAO0U25 (SEER2 24) | 74% | 31,000 | 2.00 | 10 |
| Ameristar M5THM2342A15NA | 71% | 30,000 | 2.00 | 10 |
| Boreal EMUL42HPJ132OA | 70% | 29,400 | 1.80 | 8.5 |
| Hitachi RAM-G42N5HAA | 65% | 29,400 | 2.00 | 9.2 |
| Mitsubishi Electric PUZ-AK42NL2 | 56% | 25,400 | 2.70 | 10.1 |
| Mitsubishi Electric PUZ-AK42NL | 53% | 25,400 | 2.70 | 10.1 |
| Mitsubishi Electric PUZ-A42NKA7 | 42% | 20,000 | 2.05 | 9.4 |
Top of the 42,000 Btu/h class on COP at 5°F
| Place | Product | COP at 5°F |
|---|---|---|
| joint 1st | Mitsubishi Electric PUZ-AK42NL | 2.70 |
| joint 1st | Mitsubishi Electric PUZ-AK42NL2 | 2.70 |
| 3rd | Fujitsu AOUH42KUAS1 | 2.36 |
| 4th | LG KUSXA421A | 2.20 |
| joint 5th | Fujitsu AOUH45KWAS5 | 2.14 |
Its certified matches (3)
Every top figure on this page comes from one of them, with indoor unit PLA-AE42NL*** (AHRI reference 215712195). The lowest of them lists SEER2 18.7, HSPF2 9.3 and 53% at 5°F.
Close relatives in the same line
Listed on this page only.
- Mitsubishi Electric PUZ-AK42NL2 (42,000 Btu/h class): the joint highest COP at 5°F; 56% kept at 5°F, HSPF2 10.1.
Certified as of October 27, 2026; on the market since 2023-11.