OAH18H/O4S4P
Trust Air Conditioners · mini-split heat pump
OAH18H/O4S4P is in the certified data as of Sep 19, 2026.
- 18,000 Btu (1.5-ton)
- Mini-split
This unit's certified figures are identical to DIRM-18HXPRO28-1Z (Direct Air). See the full figures, the performance chart, and a comparison with other units here:
DIRM-18HXPRO28-1Z (main listing for OAH18H/O4S4P)
Certified pairings and AHRI numbers
4 certified pairings · 4 indoor units
| AHRI certificate | Indoor unit | Furnace | Certified | At 5°FBtu/h | At 47°FBtu/h | At 95°FBtu/h · cooling |
|---|---|---|---|---|---|---|
| 208816916 | IUMW118H/I41P | No furnace | Jun 25, 2026 | 18,000 | 18,000 | 18,000 |
| 208816924 | IUMC418H/I41P | No furnace | Apr 17, 2026 | 16,000 | 17,000 | 16,000 |
| 208816932 | IUMDL18H/I43P | No furnace | Apr 17, 2026 | 17,700 | 19,000 | 17,000 |
| 208816938 | IUMFC18H/I41P | No furnace | Apr 17, 2026 | 16,800 | 18,000 | 17,000 |