AO21-18N2-M1
AI Air Conditioning · mini-split heat pump
AO21-18N2-M1 is in the certified data as of Sep 19, 2026. AO21-18N2-M1 changed its certified heat output at 17°F on AHRI certificate 215866724 from 11,700 Btu/h to 14,000 Btu/h in the certified data between December 2025 and September 2026.
- 18,000 Btu (1.5-ton)
- Mini-split
This unit's certified figures are identical to MO1BS-H18B-2A (Midea). See the full figures, the performance chart, and a comparison with other units here:
MO1BS-H18B-2A (main listing for AO21-18N2-M1)
Certified pairings and AHRI numbers
1 certified pairing · 1 indoor unit
| AHRI certificate | Indoor unit | Furnace | Certified | At 5°FBtu/h | At 47°FBtu/h | At 95°FBtu/h · cooling |
|---|---|---|---|---|---|---|
| 215866724 | AW21-18N2-M1 | No furnace | May 6, 2026 | 11,500 | 18,800 | 18,000 |
Brands listing this model number
Product history
- AO21-18N2-M1 changed its certified heat output at 17°F on AHRI certificate 215866724 from 11,700 Btu/h to 14,000 Btu/h in the certified data between December 2025 and September 2026.
- AO21-18N2-M1 first appeared in the certified data between June 2025 and August 2025.