RELIANCE 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
RELIANCE WATER HEATERS GDHE-50 3** left the DOE listing between Oct 2, 2026 and Oct 17, 2026.
RELIANCE WATER HEATERS GDHE-50 3** was in the DOE listing by Oct 2, 2026.
RELIANCE 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 |
|---|---|---|---|---|
| First-hour rating | 100 gal | 100 gal | RELIANCE 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 |
|---|---|---|---|---|---|
| 6-50-*TPDT 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 |
|---|---|---|---|---|
| 6-50-*TPDT 3** | 49 | 0.88 | 100 | 95% |
It holds 49 gallons in the test, 1 gallon less than its 50-gallon sold size. Starting full, it gives 100 gallons of hot water in its first hour of use. That is 51 gallons more than its tank holds, since it reheats during the hour.
Its single model number, 6-50-*TPDT 3**, is ENERGY STAR certified. In tests, 88% of the energy it uses ends up as hot water (UEF 0.88). Of the energy spent to reheat water, 95% goes into it (its recovery efficiency).
All of its test figures are shared by 4 other basic models. Those basic models are sold with American, GSW WATER HEATERS, and State as their brand names. For the full group, see the A. O. Smith GDHE-50 3** page.
It may qualify for 3 rebate programs. It may qualify for one more if it meets terms its figures do not show.
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.