4C28SCH18H21
CanAir · mini-split heat pump
4C28SCH18H21 is in the certified data as of Sep 19, 2026. 4C28SCH18H21 changed its certified heat output at 17°F on AHRI certificate 215449719 from 16,600 Btu/h to 18,000 Btu/h in the certified data between August 2025 and September 2026.
- 18,000 Btu (1.5-ton)
- Mini-split
This unit's certified figures are identical to CH-RHP18-230VO (Cooper&Hunter). See the full figures, the performance chart, and a comparison with other units here:
CH-RHP18-230VO (main listing for 4C28SCH18H21)
Certified pairings and AHRI numbers
10 certified pairings · 10 indoor units
| AHRI certificate | Indoor unit | Furnace | Certified | At 5°FBtu/h | At 47°FBtu/h | At 95°FBtu/h · cooling |
|---|---|---|---|---|---|---|
| 215449719 | 4C28SEH18H21 | No furnace | May 6, 2026 | 18,000 | 18,000 | 18,000 |
| 217958917 | 4C28SEF18H21 | No furnace | Nov 20, 2025 | 18,000 | 19,500 | 18,000 |
| 217958935 | 4C28SEP18H21 | No furnace | Nov 7, 2025 | 17,000 | 19,000 | 17,000 |
| 217958946 | 4C28SEOC18H21 | No furnace | Nov 7, 2025 | 17,500 | 20,000 | 16,700 |
| 217958955 | 4C28SEQ18H21 | No furnace | Nov 7, 2025 | 17,000 | 19,000 | 16,000 |
| 217958964 | 4C28SEDL18H21 | No furnace | Nov 7, 2025 | 18,000 | 19,000 | 17,000 |
| 217958974 | 4C28SEDH18H21 | No furnace | Nov 7, 2025 | 18,000 | 19,500 | 17,500 |
| 217958982 | 4C28SEC16H21 | No furnace | Nov 7, 2025 | 17,500 | 17,000 | 16,000 |
| 218027954 | 4C25SEH18H21-N | No furnace | May 28, 2026 | 18,000 | 18,000 | 18,000 |
| 218027958 | 4C25SEH18H21 | No furnace | May 28, 2026 | 18,000 | 18,000 | 18,000 |
Brands listing this model number
Product history
- 4C28SCH18H21 changed its certified heat output at 17°F on AHRI certificate 215449719 from 16,600 Btu/h to 18,000 Btu/h in the certified data between August 2025 and September 2026.
- 4C28SCH18H21 changed its certified heat output at 17°F on AHRI certificate 215449719 from 15,000 Btu/h to 16,600 Btu/h in the certified data between March 2025 and May 2025.
- 4C28SCH18H21 first appeared in the certified data between September 2024 and November 2024.