WEATHERMAKER PH5SAN430**AA*vsZERO Z4SOV-27HDMB-USHH
Side-by-side heat pump comparison
WEATHERMAKER PH5SAN430**AA*
SEER2
15.2BTU/Wh
HSPF2
7.8BTU/Wh
Cooling Capacity
27800BTU/hr
Refrigerant
R-410A
GWP 2088 · Higher
ZERO Z4SOV-27HDMB-USHH
SEER2
19–21BTU/Wh
HSPF2
9.5–10BTU/Wh
Cooling Capacity
27000–28000BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
ZERO Z4SOV-27HDMB-USHH is 28% more efficient at 21.0 BTU/Wh versus 15.2 BTU/Wh for the WEATHERMAKER PH5SAN430**AA*. The ZERO Z4SOV-27HDMB-USHH is larger at 28000 BTU/hr versus 27800 BTU/hr. ZERO Z4SOV-27HDMB-USHH uses a lower-impact refrigerant: R-454B (GWP 470) versus R-410A (GWP 2088). Overall, the ZERO Z4SOV-27HDMB-USHH sits higher in the category, ranking above 56% of certified air-source heat pumps.
Efficiency
| Spec | WEATHERMAKER | ZERO |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 15.2 | 21 |
| SEER2 (worst combination)(BTU/Wh) | 15.2 | 19 |
| HSPF2 (best combination)(BTU/Wh) | 7.8 | 10 |
| HSPF2 (worst combination)(BTU/Wh) | 7.8 | 9.5 |
| EER2 (best combination)(BTU/Wh) | 12.5 | 12 |
| COP at 5 °F | 0 | 2 |
Capacity
| Spec | WEATHERMAKER | ZERO |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 27800 | 28000 |
| Cooling Capacity (min)(BTU/hr) | 27800 | 27000 |
| Heating at 47 °F(BTU/hr) | 28000 | 28000 |
| Heating at 17 °F(BTU/hr) | 16900 | 29000 |
| Heating at 5 °F(BTU/hr) | 10000 | 27000 |
Configuration
| Spec | WEATHERMAKER | ZERO |
|---|---|---|
| Product Type | HP - Split System | HP - Mini or Multi Split |
| Compressor Staging | Single stage | Continuously variable |
| Cold Climate Certified | No | Yes |
| Connected Capability | No | No |
| Series | 15 SEER2 HP | Z4S Series |
| Indoor-Unit Combinations Rated | 1 | 3 |
Refrigerant
| Spec | WEATHERMAKER | ZERO |
|---|---|---|
| Type | R-410A | R-454B |
| GWP Rating | R-410A (GWP:2088) | R-454B (GWP:470 | Lower GWP) |