GWHD21-18H2D
Tosot · mini-split heat pump
GWHD21-18H2D is in the certified data as of Oct 2, 2026. GWHD21-18H2D changed its certified SEER2 on AHRI certificate 217580935 from 18.0 to 16.0 in the certified data between Oct 1, 2026 and Oct 2, 2026.
- 18,000 Btu (1.5-ton)
- Mini-split
GWHD21-18H2D (Tosot) has the same certified figures as MUL18HP230V1R32AO (Gree). See the full figures, the performance chart, and a comparison with other units here:
MUL18HP230V1R32AO (main listing for GWHD21-18H2D)
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 |
|---|---|---|---|---|---|---|
| 217580929 | — | No furnace | Mar 17, 2026 | 13,800 | 18,000 | 18,000 |
| 217580935 | — | No furnace | Sep 30, 2026 | 13,600 | 18,000 | 16,000 |
| 217580936 | — | No furnace | Jul 17, 2025 | 13,700 | 18,000 | 18,000 |
Model numbers with these certified figures
- MUL18HP230V1R32AOGree
- GWHD21-18H2D · this pageTosot
- MZ-COSMO18/OTosot
- TM18D6MOTosot
- TM18WH21MOTosot
Product history
- GWHD21-18H2D changed its certified SEER2 on AHRI certificate 217580935 from 18.0 to 16.0 in the certified data between Oct 1, 2026 and Oct 2, 2026.
- GWHD21-18H2D changed its certified EER2 on AHRI certificate 217580935 from 11.7 to 11.0 in the certified data between Oct 1, 2026 and Oct 2, 2026.
- GWHD21-18H2D changed its certified cooling capacity at 95°F on AHRI certificate 217580935 from 18,000 Btu/h to 16,000 Btu/h in the certified data between Oct 1, 2026 and Oct 2, 2026.
- GWHD21-18H2D first appeared in the certified data between June 2025 and August 2025.