WaterFurnace / GEOTHERMAL HEAT PUMP
W5SZ066BD1
5 SERIES INDOOR SPLIT · EPA record 3998641
Source checked Sep 21, 2026
Performance & equipment details
Values below belong to EPA record 3998641. 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 | 20.2 |
| 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 | 3998641 | EPA Sep 21, 2026 |
| markets | United States, Canada | EPA Sep 21, 2026 |
| brand name | WaterFurnace | EPA Sep 21, 2026 |
| cop rating | 3.9 | EPA Sep 21, 2026 |
| eer rating | 20.2 | EPA Sep 21, 2026 |
| model name | 5 SERIES INDOOR SPLIT | EPA Sep 21, 2026 |
| model number | W5SZ066BD1 | EPA Sep 21, 2026 |
| product type | Closed Loop Water-to-Air | EPA Sep 21, 2026 |
| date qualified | 2025-02-24T00:00:00.000 | EPA Sep 21, 2026 |
| refrigerant type | Other | EPA Sep 21, 2026 |
| energy star partner | WaterFurnace International, Incorporated | EPA Sep 21, 2026 |
| date available on market | 2025-01-02T00:00:00.000 | EPA Sep 21, 2026 |
| energy star model identifier | ES_1036337_W5SZ066BD1_01182025003240_01216759830 | EPA Sep 21, 2026 |
| meets most efficient criteria | Yes | EPA Sep 21, 2026 |