Century / GEOTHERMAL HEAT PUMP
HZS036B
Tranquility 27 Split Digital · EPA record 3845538
Source checked Sep 21, 2026
Performance & equipment details
Values below belong to EPA record 3845538. 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 | 4.1 |
| Cooling EER · BTU/Wh | 21.3 |
| Equipment / loop type | Closed Loop Water-to-Air |
| Refrigerant | R-410A |
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 | 3845538 | EPA Sep 21, 2026 |
| markets | United States, Canada | EPA Sep 21, 2026 |
| brand name | Century | EPA Sep 21, 2026 |
| cop rating | 4.1 | EPA Sep 21, 2026 |
| eer rating | 21.3 | EPA Sep 21, 2026 |
| model name | Tranquility 27 Split Digital | EPA Sep 21, 2026 |
| model number | HZS036B | EPA Sep 21, 2026 |
| product type | Closed Loop Water-to-Air | EPA Sep 21, 2026 |
| date qualified | 2024-12-11T00:00:00.000 | EPA Sep 21, 2026 |
| refrigerant type | R-410A | EPA Sep 21, 2026 |
| energy star partner | ClimateMaster Inc. | EPA Sep 21, 2026 |
| date available on market | 2015-12-01T00:00:00.000 | EPA Sep 21, 2026 |
| energy star model identifier | ES_22828_HZS036B_12112024110333_01200083697 | EPA Sep 21, 2026 |
| meets most efficient criteria | Yes | EPA Sep 21, 2026 |