5 SERIES INDOOR SPLITS / GEOTHERMAL HEAT PUMP
NSZ042J1
5 Series (Indoor Split) · EPA record 3845871
Source checked Sep 21, 2026
Performance & equipment details
Values below belong to EPA record 3845871. 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 | 4.8 |
| Cooling EER · BTU/Wh | 25.6 |
| Equipment / loop type | Open 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 | 3845871 | EPA Sep 21, 2026 |
| markets | United States, Canada | EPA Sep 21, 2026 |
| brand name | 5 SERIES INDOOR SPLITS | EPA Sep 21, 2026 |
| cop rating | 4.8 | EPA Sep 21, 2026 |
| eer rating | 25.6 | EPA Sep 21, 2026 |
| model name | 5 Series (Indoor Split) | EPA Sep 21, 2026 |
| model number | NSZ042J1 | EPA Sep 21, 2026 |
| product type | Open 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 | WaterFurnace International, Incorporated | EPA Sep 21, 2026 |
| date available on market | 2017-05-01T00:00:00.000 | EPA Sep 21, 2026 |
| energy star model identifier | ES_1036337_NSZ042J1_12102024145912_02202262238 | EPA Sep 21, 2026 |
| meets most efficient criteria | Yes | EPA Sep 21, 2026 |