Franklin MST273F32MHAAvsWEATHERMAKER PH5SAN430**AA*
Side-by-side heat pump comparison
Franklin MST273F32MHAA
SEER2
20–24BTU/Wh
HSPF2
10.5BTU/Wh
Cooling Capacity
28000BTU/hr
Cold Climate
Yes
Cold climate certified
WEATHERMAKER PH5SAN430**AA*
SEER2
15.2BTU/Wh
HSPF2
7.8BTU/Wh
Cooling Capacity
27800BTU/hr
Refrigerant
R-410A
GWP 2088 · Higher
Key differences
Franklin MST273F32MHAA is 37% more efficient at 24.0 BTU/Wh versus 15.2 BTU/Wh for the WEATHERMAKER PH5SAN430**AA*. The Franklin MST273F32MHAA is larger at 28000 BTU/hr versus 27800 BTU/hr. Franklin MST273F32MHAA uses a lower-impact refrigerant: R-32 (GWP 675) versus R-410A (GWP 2088). Overall, the Franklin MST273F32MHAA sits higher in the category, ranking above 84% of certified air-source heat pumps.
Efficiency
| Spec | Franklin | WEATHERMAKER |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 24 | 15.2 |
| SEER2 (worst combination)(BTU/Wh) | 20 | 15.2 |
| HSPF2 (best combination)(BTU/Wh) | 10.5 | 7.8 |
| HSPF2 (worst combination)(BTU/Wh) | 10.5 | 7.8 |
| EER2 (best combination)(BTU/Wh) | 14.5 | 12.5 |
| COP at 5 °F | 2.20 | 0 |
Capacity
| Spec | Franklin | WEATHERMAKER |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 28000 | 27800 |
| Cooling Capacity (min)(BTU/hr) | 28000 | 27800 |
| Heating at 47 °F(BTU/hr) | 28000 | 28000 |
| Heating at 17 °F(BTU/hr) | 28600 | 16900 |
| Heating at 5 °F(BTU/hr) | 28000 | 10000 |
Configuration
| Spec | Franklin | WEATHERMAKER |
|---|---|---|
| Product Type | HP - Mini or Multi Split | HP - Split System |
| Compressor Staging | Continuously variable | Single stage |
| Cold Climate Certified | Yes | No |
| Connected Capability | No | No |
| Series | MST Series | 15 SEER2 HP |
| Indoor-Unit Combinations Rated | 3 | 1 |
Refrigerant
| Spec | Franklin | WEATHERMAKER |
|---|---|---|
| Type | R-32 | R-410A |
| GWP Rating | R-32 (GWP:675 | Lower GWP) | R-410A (GWP:2088) |