GSW WATER HEATERS GDHE-50 3**
- Gas storage water heater
- 1 listed model
This model is not in the current certification listing as of Oct 26, 2026. It was last listed on Oct 2, 2026.
Its figures are also listed under A. O. Smith GDHE-50 3**.
Certified figures
- Storage volume
- 49gallons
- UEF
- 0.88Uniform energy factor
- First-hour rating
- 100gallonsHot water in the first hour
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Change your hourProduct history
GSW WATER HEATERS GDHE-50 3** left the DOE listing between Oct 2, 2026 and Oct 17, 2026.
GSW WATER HEATERS GDHE-50 3** was in the DOE listing by Oct 2, 2026.
GSW WATER HEATERS GDHE-50 3** has a recorded ENERGY STAR market-availability date of Sep 7, 2015. It was in the ENERGY STAR list by Aug 11, 2023.
Advertised and certified figures
| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 50 gal, nominal size | 49 gal storage volume | GSW WATER HEATERS | Read Oct 5, 2026 |
| UEF | 0.88 | 0.88 | GSW WATER HEATERS | Read Oct 5, 2026 |
Certified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| 6G50100*PDVH 3** | 49 | 0.88 | 100 | 95% | — |
UEF is the uniform energy factor. A dash means the model has no such figure.
ENERGY STAR certified models
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency |
|---|---|---|---|---|
| 6G50100*PDVH 3** | 49 | 0.88 | 100 | 95% |
It holds 49 gallons in the test, 1 gallon less than its 50-gallon sold size. Over one hour from a full tank, it gave 100 gallons in the test (its first-hour rating). That is 51 gallons more than its tank holds, since it reheats during the hour.
The single model number sold under it is ENERGY STAR certified. In tests, 88% of the energy went to hot water, so its UEF is 0.88. When it reheats water in the test, 95% of the energy it uses ends up in the water.
Its test figures match those of 4 other basic models. Of those, one or more are under the American, RELIANCE WATER HEATERS, and State brands. You can find the whole group on the page for the A. O. Smith GDHE-50 3**.
It may qualify for 3 rebate programs in 3 states. Another one program may accept it if it meets their other terms.
Also listed as
They carry every figure in the table above.
Rebates
| Program | State | Status | Program page |
|---|---|---|---|
| Colorado Springs Utilities Water heater rebate (gas storage, gas tankless) | CO | May qualify | Its own page |
| Nicor Gas Energy Efficiency Rebates for Your Home (gas storage) | IL | May qualify if it meets the other terms | Its own page |
| DTE Energy Water Heaters (gas storage, gas tankless) | MI | May qualify | Its own page |
| Avista Home and small commercial: HVAC and water heating incentives (gas storage) | WA | May qualify | Its own page |
Programs change their terms. Check the program's own page before you buy.
Not covered
- Changes to an advertised figure after the date beside it.