Panasonic CS-Z18AKUAW/CU-XZ18AKUACvsWhirlpool WLP15AY18AJ2N
Side-by-side heat pump comparison
Panasonic CS-Z18AKUAW/CU-XZ18AKUAC
SEER2
22BTU/Wh
HSPF2
11.7BTU/Wh
Cooling Capacity
17200BTU/hr
Cold Climate
Yes
Cold climate certified
Whirlpool WLP15AY18AJ2N
SEER2
15.2BTU/Wh
HSPF2
7.8BTU/Wh
Cooling Capacity
17100BTU/hr
Refrigerant
R-454B
GWP 470 · Lower
Key differences
Panasonic CS-Z18AKUAW/CU-XZ18AKUAC is 31% more efficient at 22.0 BTU/Wh versus 15.2 BTU/Wh for the Whirlpool WLP15AY18AJ2N. The Panasonic CS-Z18AKUAW/CU-XZ18AKUAC is larger at 17200 BTU/hr versus 17100 BTU/hr. Whirlpool WLP15AY18AJ2N uses a lower-impact refrigerant: R-454B (GWP 470) versus R-32 (GWP 675). Overall, the Panasonic CS-Z18AKUAW/CU-XZ18AKUAC sits higher in the category, ranking above 25% of certified air-source heat pumps.
Efficiency
| Spec | Panasonic | Whirlpool |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 22 | 15.2 |
| SEER2 (worst combination)(BTU/Wh) | 22 | 15.2 |
| HSPF2 (best combination)(BTU/Wh) | 11.7 | 7.8 |
| HSPF2 (worst combination)(BTU/Wh) | 11.7 | 7.8 |
| EER2 (best combination)(BTU/Wh) | 13.7 | 11.7 |
| COP at 5 °F | 2.22 | 1.90 |
Capacity
| Spec | Panasonic | Whirlpool |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 17200 | 17100 |
| Cooling Capacity (min)(BTU/hr) | 17200 | 17100 |
| Heating at 47 °F(BTU/hr) | 20400 | 17100 |
| Heating at 17 °F(BTU/hr) | — | 10900 |
| Heating at 5 °F(BTU/hr) | 17800 | 8200 |
Configuration
| Spec | Panasonic | Whirlpool |
|---|---|---|
| Product Type | HP - Mini or Multi Split | HP - Split System |
| Compressor Staging | Continuously variable | Two-stage |
| Cold Climate Certified | Yes | No |
| Connected Capability | No | No |
| Series | Deluxe Z | CLASSIC |
| Indoor-Unit Combinations Rated | 1 | 1 |
Refrigerant
| Spec | Panasonic | Whirlpool |
|---|---|---|
| Type | R-32 | R-454B |
| GWP Rating | R-32 (GWP:675 | Lower GWP) | R-454B (GWP:470 | Lower GWP) |