Grandaire W5H8T48*K*AAA*vsMARATHERM N5H8T48*K*AAA*
Side-by-side heat pump comparison
Grandaire W5H8T48*K*AAA*
SEER2
15.2–18BTU/Wh
HSPF2
7.8–8.5BTU/Wh
Cooling Capacity
46000–50000BTU/hr
Refrigerant
R-454B
GWP 470 · Lower
MARATHERM N5H8T48*K*AAA*
SEER2
15.2–18BTU/Wh
HSPF2
7.8–8.5BTU/Wh
Cooling Capacity
45500–50500BTU/hr
Refrigerant
R-454B
GWP 470 · Lower
Key differences
The MARATHERM N5H8T48*K*AAA* is larger at 50500 BTU/hr versus 50000 BTU/hr.
Efficiency
| Spec | Grandaire | MARATHERM |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 18 | 18 |
| SEER2 (worst combination)(BTU/Wh) | 15.2 | 15.2 |
| HSPF2 (best combination)(BTU/Wh) | 8.5 | 8.5 |
| HSPF2 (worst combination)(BTU/Wh) | 7.8 | 7.8 |
| EER2 (best combination)(BTU/Wh) | 13.5 | 13.5 |
| COP at 5 °F | 2.32 | 2.32 |
Capacity
| Spec | Grandaire | MARATHERM |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 50000 | 50500 |
| Cooling Capacity (min)(BTU/hr) | 46000 | 45500 |
| Heating at 47 °F(BTU/hr) | 52000 | 52500 |
| Heating at 17 °F(BTU/hr) | 32400 | 32600 |
| Heating at 5 °F(BTU/hr) | 26200 | 26600 |
Configuration
| Spec | Grandaire | MARATHERM |
|---|---|---|
| Product Type | HP - Split System | HP - Split System |
| Compressor Staging | Two-stage | Two-stage |
| Cold Climate Certified | No | No |
| Connected Capability | No | No |
| Series | 2-STAGE 18 SEER HP | 2-STAGE 18 SEER HP |
| Indoor-Unit Combinations Rated | 106 | 243 |
Refrigerant
| Spec | Grandaire | MARATHERM |
|---|---|---|
| Type | R-454B | R-454B |
| GWP Rating | R-454B (GWP:470 | Lower GWP) | R-454B (GWP:470 | Lower GWP) |