Franklin MST183F32MHAAvsTempstar D5CUHAH18AAK
Side-by-side heat pump comparison
Franklin MST183F32MHAA
SEER2
22–27BTU/Wh
HSPF2
11BTU/Wh
Cooling Capacity
19000BTU/hr
Cold Climate
Yes
Cold climate certified
Tempstar D5CUHAH18AAK
SEER2
15.2–19.3BTU/Wh
HSPF2
9–12.5BTU/Wh
Cooling Capacity
17700–18800BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
Franklin MST183F32MHAA is 29% more efficient at 27.0 BTU/Wh versus 19.3 BTU/Wh for the Tempstar D5CUHAH18AAK. The Franklin MST183F32MHAA is larger at 19000 BTU/hr versus 18800 BTU/hr. Tempstar D5CUHAH18AAK uses a lower-impact refrigerant: R-454B (GWP 470) versus R-32 (GWP 675). Overall, the Franklin MST183F32MHAA sits higher in the category, ranking above 96% of certified air-source heat pumps.
Efficiency
| Spec | Franklin | Tempstar |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 27 | 19.3 |
| SEER2 (worst combination)(BTU/Wh) | 22 | 15.2 |
| HSPF2 (best combination)(BTU/Wh) | 11 | 12.5 |
| HSPF2 (worst combination)(BTU/Wh) | 11 | 9 |
| EER2 (best combination)(BTU/Wh) | 16 | 12.5 |
| COP at 5 °F | 2.10 | 2.12 |
Capacity
| Spec | Franklin | Tempstar |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 19000 | 18800 |
| Cooling Capacity (min)(BTU/hr) | 19000 | 17700 |
| Heating at 47 °F(BTU/hr) | 20000 | 22600 |
| Heating at 17 °F(BTU/hr) | 21600 | 16100 |
| Heating at 5 °F(BTU/hr) | 20600 | 19600 |
Configuration
| Spec | Franklin | Tempstar |
|---|---|---|
| Product Type | HP - Mini or Multi Split | HP - Split System |
| Compressor Staging | Continuously variable | Continuously variable |
| Cold Climate Certified | Yes | Yes |
| Connected Capability | No | No |
| Series | MST Series | D5F Series |
| Indoor-Unit Combinations Rated | 3 | 38 |
Refrigerant
| Spec | Franklin | Tempstar |
|---|---|---|
| Type | R-32 | R-454B |
| GWP Rating | R-32 (GWP:675 | Lower GWP) | R-454B (GWP:470 | Lower GWP) |