Invertercool COH17S-36AD*vsZERO ZOV-36HDTB
Side-by-side heat pump comparison
Invertercool COH17S-36AD*
SEER2
17.5–18.5BTU/Wh
HSPF2
8.8BTU/Wh
Cooling Capacity
24000–34200BTU/hr
Cold Climate
Yes
Cold climate certified
ZERO ZOV-36HDTB
SEER2
19BTU/Wh
HSPF2
9BTU/Wh
Cooling Capacity
34000BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
ZERO ZOV-36HDTB is 3% more efficient at 19.0 BTU/Wh versus 18.5 BTU/Wh for the Invertercool COH17S-36AD*. The Invertercool COH17S-36AD* is larger at 34200 BTU/hr versus 34000 BTU/hr. ZERO ZOV-36HDTB uses a lower-impact refrigerant: R-454B (GWP 470) versus R-32 (GWP 675).
Efficiency
| Spec | Invertercool | ZERO |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 18.5 | 19 |
| SEER2 (worst combination)(BTU/Wh) | 17.5 | 19 |
| HSPF2 (best combination)(BTU/Wh) | 8.8 | 9 |
| HSPF2 (worst combination)(BTU/Wh) | 8.8 | 9 |
| EER2 (best combination)(BTU/Wh) | 12 | 10 |
| COP at 5 °F | 2 | 1.90 |
Capacity
| Spec | Invertercool | ZERO |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 34200 | 34000 |
| Cooling Capacity (min)(BTU/hr) | 24000 | 34000 |
| Heating at 47 °F(BTU/hr) | 34200 | 34000 |
| Heating at 17 °F(BTU/hr) | 26600 | 25000 |
| Heating at 5 °F(BTU/hr) | 24000 | 26000 |
Configuration
| Spec | Invertercool | ZERO |
|---|---|---|
| Product Type | HP - Split System | HP - Split System |
| Compressor Staging | Continuously variable | Continuously variable |
| Cold Climate Certified | Yes | Yes |
| Connected Capability | No | No |
| Series | R32 Heat Pump | Z-MAX |
| Indoor-Unit Combinations Rated | 2 | 1 |
Refrigerant
| Spec | Invertercool | ZERO |
|---|---|---|
| Type | R-32 | R-454B |
| GWP Rating | R-32 (GWP:675 | Lower GWP) | R-454B (GWP:470 | Lower GWP) |