4PAMSHH18-SZO
PerfectAire · mini-split heat pump
4PAMSHH18-SZO is in the certified data as of Sep 19, 2026. 4PAMSHH18-SZO changed its certified heat output at 17°F on AHRI certificate 217221805 from 14,400 Btu/h to 16,600 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 500004494 (Convectair). See the full figures, the performance chart, and a comparison with other units here:
500004494 (main listing for 4PAMSHH18-SZO)
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 |
|---|---|---|---|---|---|---|
| 217221805 | 4PAMSHH18-UVW | No furnace | May 28, 2026 | 18,000 | 18,000 | 18,000 |
Brands listing this model number
Product history
- 4PAMSHH18-SZO changed its certified heat output at 17°F on AHRI certificate 217221805 from 14,400 Btu/h to 16,600 Btu/h in the certified data between August 2025 and September 2026.
- 4PAMSHH18-SZO first appeared in the certified data between March 2025 and May 2025.