WATERLESS / GEOTHERMAL HEAT PUMP
WG1H-66D1-CP*-*-*
WG1H-66 · EPA record 4000251
Source checked Sep 21, 2026
Performance & equipment details
Values below belong to EPA record 4000251. Temperature points and test metrics are preserved as reported. Missing and zero values are not substituted with estimates.
| Metric or attribute | Source value |
|---|---|
| Heating COP | 3.6 |
| Cooling EER · BTU/Wh | 19.1 |
| Equipment / loop type | DGX-to-Water |
| Refrigerant | Other |
Specifications & provenance
Every value below is preserved from the source record. Checked Sep 21, 2026. Asterisks and other model wildcards are retained as published.
| Source field | Reported value | Evidence |
|---|---|---|
| pd id | 4000251 | EPA Sep 21, 2026 |
| markets | United States, Canada | EPA Sep 21, 2026 |
| brand name | WATERLESS | EPA Sep 21, 2026 |
| cop rating | 3.6 | EPA Sep 21, 2026 |
| eer rating | 19.1 | EPA Sep 21, 2026 |
| model name | WG1H-66 | EPA Sep 21, 2026 |
| model number | WG1H-66D1-CP*-*-* | EPA Sep 21, 2026 |
| product type | DGX-to-Water | EPA Sep 21, 2026 |
| date qualified | 2025-03-18T00:00:00.000 | EPA Sep 21, 2026 |
| refrigerant type | Other | EPA Sep 21, 2026 |
| energy star partner | Total Green Manufacturing (Mfg) | EPA Sep 21, 2026 |
| date available on market | 2025-01-06T00:00:00.000 | EPA Sep 21, 2026 |
| energy star model identifier | ES_17880_WG1H-66D1-CP*-*-*_01082025080135_07216732495 | EPA Sep 21, 2026 |
| meets most efficient criteria | Yes | EPA Sep 21, 2026 |