SM-48HSM2-CU
SUM X · HP - Split System
16.5–19BTU/Wh
8.3–9BTU/Wh
48000BTU/hr
Yes
SUM X SM-48HSM2-CU: SEER2 19 BTU/Wh, around the middle of the range for air-source heat pumps (category median 20 BTU/Wh).
Where this model sits
The SUM X SM-48HSM2-CU is a 48000 BTU/hr hp - split system using R-454B, a refrigerant with moderate global warming potential (GWP 470). At 19 BTU/Wh it ranks around the middle of the 12,218 certified air-source heat pumps models. Among similar-sized air-source heat pumps (within 10% of its size), it is more efficient than the peer median of 18 BTU/Wh. In this size range, comparable Midea models average 18.8 BTU/Wh and Airquest models average 18.4 BTU/Wh.
Specifications
| Efficiency | |
|---|---|
| SEER2 (best combination) | 19BTU/Wh |
| SEER2 (worst combination) | 16.5BTU/Wh |
| HSPF2 (best combination) | 9BTU/Wh |
| HSPF2 (worst combination) | 8.3BTU/Wh |
| EER2 (best combination) | 12.1BTU/Wh |
| COP at 5 °F | 2.52 |
| Capacity | |
| Cooling Capacity (max) | 48000BTU/hr |
| Cooling Capacity (min) | 48000BTU/hr |
| Heating at 47 °F | 48000BTU/hr |
| Heating at 17 °F | 36600BTU/hr |
| Heating at 5 °F | 37000BTU/hr |
All 25 specifications
| Configuration | |
|---|---|
| Product Type | HP - Split System |
| Compressor Staging | Continuously variable |
| Cold Climate Certified | Yes |
| Connected Capability | No |
| Series | SM-COIL |
| Indoor-Unit Combinations Rated | 2 |
| Refrigerant | |
| Type | R-454B |
| GWP Rating | R-454B (GWP:470 | Lower GWP) |
| Identifiers | |
| Model Number | SM-48HSM2-CU |
| ENERGY STAR ID | ES_1151410_SM-48HSM2-CU_09222025223018_28217747176 |
| Partner | Distribution Sum X Inc. |
| Date Certified | 2026-05-01 |
| Available From | 2026-03-06 |
| Markets | Canada |
Documentation
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