Lennox MWMD018S6-1PvsTempstar D5CURAH18AAK+KSAIC0701230
Side-by-side heat pump comparison
Lennox MWMD018S6-1P
SEER2
21BTU/Wh
HSPF2
9.7BTU/Wh
Cooling Capacity
18500BTU/hr
Cold Climate
Yes
Cold climate certified
Tempstar D5CURAH18AAK+KSAIC0701230
SEER2
16.2BTU/Wh
HSPF2
8.5BTU/Wh
Cooling Capacity
18400BTU/hr
Refrigerant
R-454B
GWP 470 · Lower
Key differences
Lennox MWMD018S6-1P is 23% more efficient at 21.0 BTU/Wh versus 16.2 BTU/Wh for the Tempstar D5CURAH18AAK+KSAIC0701230. The Lennox MWMD018S6-1P is larger at 18500 BTU/hr versus 18400 BTU/hr. Tempstar D5CURAH18AAK+KSAIC0701230 uses a lower-impact refrigerant: R-454B (GWP 470) versus R-32 (GWP 675). Overall, the Lennox MWMD018S6-1P sits higher in the category, ranking above 37% of certified air-source heat pumps.
Efficiency
| Spec | Lennox | Tempstar |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 21 | 16.2 |
| SEER2 (worst combination)(BTU/Wh) | 21 | 16.2 |
| HSPF2 (best combination)(BTU/Wh) | 9.7 | 8.5 |
| HSPF2 (worst combination)(BTU/Wh) | 9.7 | 8.5 |
| EER2 (best combination)(BTU/Wh) | 13.2 | 11 |
| COP at 5 °F | 2.05 | 1.90 |
Capacity
| Spec | Lennox | Tempstar |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 18500 | 18400 |
| Cooling Capacity (min)(BTU/hr) | 18500 | 18400 |
| Heating at 47 °F(BTU/hr) | 20000 | 18800 |
| Heating at 17 °F(BTU/hr) | 17500 | 12300 |
| Heating at 5 °F(BTU/hr) | 14300 | 11000 |
Configuration
| Spec | Lennox | Tempstar |
|---|---|---|
| Product Type | HP - Mini or Multi Split | HP - Split System |
| Compressor Staging | Continuously variable | Continuously variable |
| Cold Climate Certified | Yes | No |
| Connected Capability | No | No |
| Series | WindFree - Premium (RAC) | Crossover Heat Pump |
| Indoor-Unit Combinations Rated | 2 | 1 |
Refrigerant
| Spec | Lennox | Tempstar |
|---|---|---|
| Type | R-32 | R-454B |
| GWP Rating | R-32 (GWP:675 | Lower GWP) | R-454B (GWP:470 | Lower GWP) |