Williamson-Thermoflo / BOILER
GWC-070-N-T
GWC · EPA record 2312390
Source checked Sep 21, 2026
Performance & equipment details
Values below belong to EPA record 2312390. Temperature points and test metrics are preserved as reported. Missing and zero values are not substituted with estimates.
| Metric or attribute | Source value |
|---|---|
| AFUE · % | 91 |
| Equipment / loop type | Boiler |
| Fuel | Natural Gas,Propane Gas |
| Hot-water integration | Yes |
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 | 2312390 | EPA Sep 21, 2026 |
| markets | United States | EPA Sep 21, 2026 |
| fuel type | Natural Gas,Propane Gas | EPA Sep 21, 2026 |
| brand name | Williamson-Thermoflo | EPA Sep 21, 2026 |
| model name | GWC | EPA Sep 21, 2026 |
| model number | GWC-070-N-T | EPA Sep 21, 2026 |
| product type | Boiler | EPA Sep 21, 2026 |
| date qualified | 2026-07-30T00:00:00.000 | EPA Sep 21, 2026 |
| efficiency afue | 91 | EPA Sep 21, 2026 |
| energy star partner | The Marley-Wylain Company | EPA Sep 21, 2026 |
| date available on market | 2011-08-01T00:00:00.000 | EPA Sep 21, 2026 |
| energy star model identifier | ES_1090273_GWC-070-N-T_03072018201038_8977785 | EPA Sep 21, 2026 |
| can integrate hot water heating | Yes | EPA Sep 21, 2026 |