MZUHW18KCH21S2-O
Willis · mini-split heat pump
MZUHW18KCH21S2-O is in the certified data as of Sep 19, 2026. MZUHW18KCH21S2-O changed its certified heat output at 17°F on AHRI certificate 214810331 from 14,700 Btu/h to 15,000 Btu/h in the certified data between March 2025 and May 2025.
- 18,000 Btu (1.5-ton)
- Mini-split
MZUHW18KCH21S2-O (Willis) has the same certified figures as MULTI18HP230V1EO (Gree). See the full figures, the performance chart, and a comparison with other units here:
MULTI18HP230V1EO (main listing for MZUHW18KCH21S2-O)
Certified pairings and AHRI numbers
1 certified pairing
| AHRI certificate | Indoor unit | Furnace | Certified | At 5°FBtu/h | At 47°FBtu/h | At 95°FBtu/h · cooling |
|---|---|---|---|---|---|---|
| 214810331 | — | No furnace | Jun 13, 2026 | 13,600 | 18,000 | 17,000 |
Model numbers with these certified figures
- MULTI18HP230V1EOGree
- 4TXM2118A12N0American Standard, Trane
- A-VFH18DC-1Comfort-Aire
- AWHD(18)ND3MOAC Pro
- BBM18HX4OWabban
- BMKH18MCBlueridge
- GFMCX18-H2Comformatic
- GXH18(5.3)FMK4DH-1AireForce, Airtemp, Gibson
- MBRS18HPJ1OEBoreal
- MPD18KCH21SB-OACD
- MZ-M18/OTosot
- MZUHW18KCH21S2-O · this pageWillis
- TM18HMOTosot
Product history
- MZUHW18KCH21S2-O changed its certified heat output at 17°F on AHRI certificate 214810331 from 14,700 Btu/h to 15,000 Btu/h in the certified data between March 2025 and May 2025.
- MZUHW18KCH21S2-O was in the certified data by September 2024.