454-28-4Z-O
DuctlessAire · mini-split heat pump
454-28-4Z-O is in the certified data as of Sep 19, 2026. 454-28-4Z-O changed its certified heat output at 17°F on 3 pairings in the certified data between August 2025 and September 2026. The new figure is higher on all 3.
- 24,000 Btu (2-ton)
- Mini-split
454-28-4Z-O (DuctlessAire) has the same certified figures as CU - 4YM27CBUC (Panasonic). See the full figures, the performance chart, and a comparison with other units here:
CU - 4YM27CBUC (main listing for 454-28-4Z-O)
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 |
|---|---|---|---|---|---|---|
| 217232131 | — | No furnace | May 6, 2026 | 19,000 | 27,000 | 26,000 |
| 217232132 | — | No furnace | May 6, 2026 | 18,800 | 26,600 | 26,600 |
| 217232133 | — | No furnace | May 6, 2026 | 18,900 | 26,800 | 26,200 |
Model numbers with these certified figures
- CU - 4YM27CBUCPanasonic
- 454-28-4Z-O · this pageDuctlessAire
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- BFMS27MZPL-02OBluefin
- CMZ3-30-4ZComfortStar
- DA27-4Z-ODuctlessAire
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- EXHSA2742AV1Elios
- KEENSTZHP27AAKEEN Home
- M4S27HN/O6S4PTrust Air Conditioners
- M4S27HS/O6S4PTrust Air Conditioners
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- RO-MQ28-LA-QMitsutomo
- SAK-27-TZ/220VStar Air Kontrol
- SHC4Z27AC2AGSlimAir
- WOM-27RH4/230Wells
- Z4SOV-27HDMB-USZero
Product history
- 454-28-4Z-O changed its certified heat output at 17°F on 3 pairings in the certified data between August 2025 and September 2026. The new figure is higher on all 3.
- 454-28-4Z-O first appeared in the certified data between March 2025 and May 2025.