DIRECT AIR DIRM4-18DA25-1ZvsHaier 1U18EH2HE**
Side-by-side heat pump comparison
DIRECT AIR DIRM4-18DA25-1Z
SEER2
20–23.5BTU/Wh
HSPF2
10.4–11.4BTU/Wh
Cooling Capacity
16800–18000BTU/hr
Cold Climate
Yes
Cold climate certified
Haier 1U18EH2HE**
SEER2
23BTU/Wh
HSPF2
12BTU/Wh
Cooling Capacity
17800BTU/hr
Cold Climate
Yes
Cold climate certified
Key differences
Both models are closely matched on seer2: 23.5 vs 23.0 BTU/Wh. The DIRECT AIR DIRM4-18DA25-1Z is larger at 18000 BTU/hr versus 17800 BTU/hr. DIRECT AIR DIRM4-18DA25-1Z uses a lower-impact refrigerant: R-454B (GWP 470) versus R-410A (GWP 2088). Overall, the DIRECT AIR DIRM4-18DA25-1Z sits higher in the category, ranking above 82% of certified air-source heat pumps.
Efficiency
| Spec | DIRECT AIR | Haier |
|---|---|---|
| SEER2 (best combination)(BTU/Wh) | 23.5 | 23 |
| SEER2 (worst combination)(BTU/Wh) | 20 | 23 |
| HSPF2 (best combination)(BTU/Wh) | 11.4 | 12 |
| HSPF2 (worst combination)(BTU/Wh) | 10.4 | 12 |
| EER2 (best combination)(BTU/Wh) | 13.3 | 13 |
| COP at 5 °F | 2.40 | 1.90 |
Capacity
| Spec | DIRECT AIR | Haier |
|---|---|---|
| Cooling Capacity (max)(BTU/hr) | 18000 | 17800 |
| Cooling Capacity (min)(BTU/hr) | 16800 | 17800 |
| Heating at 47 °F(BTU/hr) | 20000 | 20000 |
| Heating at 17 °F(BTU/hr) | 15000 | 15300 |
| Heating at 5 °F(BTU/hr) | 14200 | 18000 |
Configuration
| Spec | DIRECT AIR | Haier |
|---|---|---|
| Product Type | HP - Mini or Multi Split | HP - Mini or Multi Split |
| Compressor Staging | Continuously variable | Continuously variable |
| Cold Climate Certified | Yes | Yes |
| Connected Capability | No | No |
| Series | DIR Series | Arctic |
| Indoor-Unit Combinations Rated | 4 | 1 |
Refrigerant
| Spec | DIRECT AIR | Haier |
|---|---|---|
| Type | R-454B | R-410A |
| GWP Rating | R-454B (GWP:470 | Lower GWP) | R-410A (GWP:2088) |