MZUHW42KR32-O
Willis · mini-split heat pump
MZUHW42KR32-O is in the certified data as of Sep 19, 2026. MZUHW42KR32-O changed its certified heat output at 17°F on AHRI certificate 216772312 from 40,000 Btu/h to 44,500 Btu/h in the certified data between August 2025 and December 2025.
- 42,000 Btu (3.5-ton)
- Mini-split
MZUHW42KR32-O (Willis) has the same certified figures as GS5M42HP230V1MO (Gree). See the full figures, the performance chart, and a comparison with other units here:
GS5M42HP230V1MO (main listing for MZUHW42KR32-O)
Certified pairings and AHRI numbers
3 certified pairings
| AHRI certificate | Indoor unit | Furnace | Certified | At 5°FBtu/h | At 47°FBtu/h | At 95°FBtu/h · cooling |
|---|---|---|---|---|---|---|
| 216772312 | — | No furnace | Mar 17, 2026 | 37,800 | 42,000 | 42,000 |
| 216772318 | — | No furnace | Mar 17, 2026 | 36,000 | 42,000 | 42,000 |
| 216772322 | — | No furnace | Mar 17, 2026 | 37,000 | 42,000 | 42,000 |
Model numbers with these certified figures
- GS5M42HP230V1MOGree
- AFMKH42-H2Air Max
- BXM2Z42UC0Blueridge
- DXH42FMK3IHAireForce, Airtemp, Gibson, Intertherm
- GMRSHC42AS5Classic
- GMRSHT42AS5TGM
- GWHD(42)ND6MOGree
- KM42X6OKinghome
- MHPC-D-042BMCAC Pro
- MUL42HP230V1R32AOGree
- MUL42HPJ132OABoreal
- MZUHW42KR32-O · this pageWillis
- OFRM5X1-H42A-OOuellet
- QVMZ42*R32QuébecVair
- TM42H32MOTosot
- TM42R32MOTosot
- TMH42D32MOTosot
Product history
- MZUHW42KR32-O changed its certified heat output at 17°F on AHRI certificate 216772312 from 40,000 Btu/h to 44,500 Btu/h in the certified data between August 2025 and December 2025.
- MZUHW42KR32-O first appeared in the certified data between March 2025 and May 2025.