WHALEN / GEOTHERMAL HEAT PUMP
WZ(L/R/B/P/T/K)036A
Tranquility 24 Versatile Two-Stage · EPA record 3999404
Source checked Sep 21, 2026
Performance & equipment details
Values below belong to EPA record 3999404. 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 | 3.9 |
| Cooling EER · BTU/Wh | 19.5 |
| Equipment / loop type | Closed Loop Water-to-Air |
| 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 | 3999404 | EPA Sep 21, 2026 |
| markets | United States, Canada | EPA Sep 21, 2026 |
| brand name | WHALEN | EPA Sep 21, 2026 |
| cop rating | 3.9 | EPA Sep 21, 2026 |
| eer rating | 19.5 | EPA Sep 21, 2026 |
| model name | Tranquility 24 Versatile Two-Stage | EPA Sep 21, 2026 |
| model number | WZ(L/R/B/P/T/K)036A | EPA Sep 21, 2026 |
| product type | Closed Loop Water-to-Air | EPA Sep 21, 2026 |
| date qualified | 2025-03-05T00:00:00.000 | EPA Sep 21, 2026 |
| refrigerant type | Other | EPA Sep 21, 2026 |
| energy star partner | Heat Controller Inc. | EPA Sep 21, 2026 |
| date available on market | 2024-07-17T00:00:00.000 | EPA Sep 21, 2026 |
| energy star model identifier | ES_17771_WZ(L/R/B/P/T/K)036A_02252025171429_01216419944 | EPA Sep 21, 2026 |
| meets most efficient criteria | Yes | EPA Sep 21, 2026 |