COSTWAY FP10789US-12BKvsStar Air Kontrol SAK-18-CT2/220V
Side-by-side heat pump comparison
COSTWAY FP10789US-12BK
SEER2
21BTU/Wh
HSPF2
9BTU/Wh
Cooling Capacity
17000BTU/hr
Refrigerant
R-32
GWP 675 · Lower
Star Air Kontrol SAK-18-CT2/220V
SEER2
20.7BTU/Wh
HSPF2
11.4BTU/Wh
Cooling Capacity
16800BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
Both models are closely matched on seer2: 21.0 vs 20.7 BTU/Wh. The COSTWAY FP10789US-12BK is larger at 17000 BTU/hr versus 16800 BTU/hr. Star Air Kontrol SAK-18-CT2/220V uses a lower-impact refrigerant: R-454B (GWP 470) versus R-32 (GWP 675).
Efficiency
| Spec | COSTWAY | Star Air Kontrol |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 21 | 20.7 |
| SEER2 (worst combination)(BTU/Wh) | 21 | 20.7 |
| HSPF2 (best combination)(BTU/Wh) | 9 | 11.4 |
| HSPF2 (worst combination)(BTU/Wh) | 9 | 11.4 |
| EER2 (best combination)(BTU/Wh) | 12 | 12.5 |
| COP at 5 °F | 2.17 | 2.20 |
Capacity
| Spec | COSTWAY | Star Air Kontrol |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 17000 | 16800 |
| Cooling Capacity (min)(BTU/hr) | 17000 | 16800 |
| Heating at 47 °F(BTU/hr) | 17700 | 18000 |
| Heating at 17 °F(BTU/hr) | 14300 | 13900 |
| Heating at 5 °F(BTU/hr) | 11600 | 12800 |
Configuration
| Spec | COSTWAY | Star Air Kontrol |
|---|---|---|
| Product Type | HP - Mini or Multi Split | HP - Mini or Multi Split |
| Compressor Staging | Continuously variable | Continuously variable |
| Cold Climate Certified | No | Yes |
| Connected Capability | No | No |
| Series | H series | SAK Series |
| Indoor-Unit Combinations Rated | 1 | 1 |
Refrigerant
| Spec | COSTWAY | Star Air Kontrol |
|---|---|---|
| Type | R-32 | R-454B |
| GWP Rating | R-32 (GWP:675 | Lower GWP) | R-454B (GWP:470 | Lower GWP) |