Tempstar Q5H9V36*K*AAA*vsZERO Z4SOV-36HDTA-US-O
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
ZERO Z4SOV-36HDTA-US-O
SEER2
23BTU/Wh
HSPF2
10BTU/Wh
Cooling Capacity
38000BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
ZERO Z4SOV-36HDTA-US-O is 22% more efficient at 23.0 BTU/Wh versus 18.0 BTU/Wh for the Tempstar Q5H9V36*K*AAA*. The ZERO Z4SOV-36HDTA-US-O is larger at 38000 BTU/hr versus 37600 BTU/hr. Tempstar Q5H9V36*K*AAA* uses a lower-impact refrigerant: R-454B (GWP 470) versus R-32 (GWP 675).
Efficiency
| Spec | Tempstar | ZERO |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 18 | 23 |
| SEER2 (worst combination)(BTU/Wh) | 15.2 | 23 |
| HSPF2 (best combination)(BTU/Wh) | 9 | 10 |
| HSPF2 (worst combination)(BTU/Wh) | 7.8 | 10 |
| EER2 (best combination)(BTU/Wh) | 13.5 | 11.2 |
| COP at 5 °F | 2.18 | 2 |
Capacity
| Spec | Tempstar | ZERO |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 37600 | 38000 |
| Cooling Capacity (min)(BTU/hr) | 33400 | 38000 |
| Heating at 47 °F(BTU/hr) | 37400 | 42000 |
| Heating at 17 °F(BTU/hr) | 37600 | 33000 |
| Heating at 5 °F(BTU/hr) | 26600 | 31000 |
Configuration
| Spec | Tempstar | ZERO |
|---|---|---|
| Product Type | HP - Split System | HP - Mini or Multi Split |
| Compressor Staging | Continuously variable | Continuously variable |
| Cold Climate Certified | Yes | Yes |
| Connected Capability | No | No |
| Series | QuietComfort 19 SEER2 VS HP | Z-MAX US R32 Hyper Heat Series |
| Indoor-Unit Combinations Rated | 450 | 1 |
Refrigerant
| Spec | Tempstar | ZERO |
|---|---|---|
| Type | R-454B | R-32 |
| GWP Rating | R-454B (GWP:470 | Lower GWP) | R-32 (GWP:675 | Lower GWP) |