LG KUSXA121AvsZERO ZMSB-12HVT110-USR1-S24-O
Side-by-side heat pump comparison
LG KUSXA121A
SEER2
17BTU/Wh
HSPF2
9.8BTU/Wh
Cooling Capacity
12500BTU/hr
Cold Climate
Yes
Cold climate certified
ZERO ZMSB-12HVT110-USR1-S24-O
SEER2
24BTU/Wh
HSPF2
10BTU/Wh
Cooling Capacity
12000BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
ZERO ZMSB-12HVT110-USR1-S24-O is 29% more efficient at 24.0 BTU/Wh versus 17.0 BTU/Wh for the LG KUSXA121A. The LG KUSXA121A is larger at 12500 BTU/hr versus 12000 BTU/hr. Overall, the ZERO ZMSB-12HVT110-USR1-S24-O sits higher in the category, ranking above 84% of certified air-source heat pumps.
Efficiency
| Spec | LG | ZERO |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 17 | 24 |
| SEER2 (worst combination)(BTU/Wh) | 17 | 24 |
| HSPF2 (best combination)(BTU/Wh) | 9.8 | 10 |
| HSPF2 (worst combination)(BTU/Wh) | 9.8 | 10 |
| EER2 (best combination)(BTU/Wh) | 13.3 | 13 |
| COP at 5 °F | 1.95 | 1.80 |
Capacity
| Spec | LG | ZERO |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 12500 | 12000 |
| Cooling Capacity (min)(BTU/hr) | 12500 | 12000 |
| Heating at 47 °F(BTU/hr) | 15000 | 12000 |
| Heating at 17 °F(BTU/hr) | 8600 | 11500 |
| Heating at 5 °F(BTU/hr) | 15000 | 10000 |
Configuration
| Spec | LG | 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 | KUSXA121A | Z-MAX US R32 Hyper Heat Series |
| Indoor-Unit Combinations Rated | 2 | 1 |
Refrigerant
| Spec | LG | ZERO |
|---|---|---|
| Type | R-32 | R-32 |
| GWP Rating | R-32 (GWP:675 | Lower GWP) | R-32 (GWP:675 | Lower GWP) |