Tempstar Q5H9V36*K*AAA*vsWEATHERMAKER PH8TAN536**AA*
Side-by-side heat pump comparison
Tempstar Q5H9V36*K*AAA*
SEER2
15.2–18BTU/Wh
HSPF2
7.8–9BTU/Wh
Cooling Capacity
33400–37600BTU/hr
Cold Climate
Yes
Cold climate certified
WEATHERMAKER PH8TAN536**AA*
SEER2
15.2–17BTU/Wh
HSPF2
7.8–8.5BTU/Wh
Cooling Capacity
33800–38000BTU/hr
Refrigerant
R-454B
GWP 470 · Lower
Key differences
Tempstar Q5H9V36*K*AAA* is 6% more efficient at 18.0 BTU/Wh versus 17.0 BTU/Wh for the WEATHERMAKER PH8TAN536**AA*. The WEATHERMAKER PH8TAN536**AA* is larger at 38000 BTU/hr versus 37600 BTU/hr.
Efficiency
| Spec | Tempstar | WEATHERMAKER |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 18 | 17 |
| SEER2 (worst combination)(BTU/Wh) | 15.2 | 15.2 |
| HSPF2 (best combination)(BTU/Wh) | 9 | 8.5 |
| HSPF2 (worst combination)(BTU/Wh) | 7.8 | 7.8 |
| EER2 (best combination)(BTU/Wh) | 13.5 | 13 |
| COP at 5 °F | 2.18 | 2.48 |
Capacity
| Spec | Tempstar | WEATHERMAKER |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 37600 | 38000 |
| Cooling Capacity (min)(BTU/hr) | 33400 | 33800 |
| Heating at 47 °F(BTU/hr) | 37400 | 39000 |
| Heating at 17 °F(BTU/hr) | 37600 | 24200 |
| Heating at 5 °F(BTU/hr) | 26600 | 19600 |
Configuration
| Spec | Tempstar | WEATHERMAKER |
|---|---|---|
| Product Type | HP - Split System | HP - Split System |
| Compressor Staging | Continuously variable | Two-stage |
| Cold Climate Certified | Yes | No |
| Connected Capability | No | No |
| Series | QuietComfort 19 SEER2 VS HP | 2-STAGE 18 SEER HP |
| Indoor-Unit Combinations Rated | 450 | 104 |
Refrigerant
| Spec | Tempstar | WEATHERMAKER |
|---|---|---|
| Type | R-454B | R-454B |
| GWP Rating | R-454B (GWP:470 | Lower GWP) | R-454B (GWP:470 | Lower GWP) |