A. O. Smith GDHE-75 3 80-Gallon
A. O. Smith GDHE-75 3 80-Gallon is a gas storage water heater from A. O. Smith with a 74 gallon rated tank and a 130 gallon first-hour rating at a 0.86 UEF.
| Uniform Energy Factor (UEF) | 0.86 |
|---|---|
| Annual gas use (natural gas) | 197 therms/yr |
| Recovery efficiency | 96 % |
| Annual propane use | 215.3 gal/yr |
| Fuel | Natural Gas, Propane |
|---|
| First-hour rating | 130 gal |
|---|---|
| Rated storage volume | 74 gal |
| Draw pattern | High |
| Gas input rate | 100 kBTU/h |
|---|
| Max current draw | 5 A |
|---|---|
| Vent type | Power Vent |
| Vent size | 2 / 3 |
| Smart / connected capable | No |
|---|
| Height | 51.9 in |
|---|---|
| Diameter | 22.5 in |
| ENERGY STAR certified | Yes |
|---|
Capacity and running cost
- Its 130 gallon first-hour rating suits a household of 5+ people under DOE sizing guidance.
- Rated for a high-usage draw pattern under the DOE test procedure.
- Estimated running cost: about $286/year at national average gas rates.
Similar water heaters
- A. O. Smith HDHE-75 4 80-Gallon (UEF 0.86)
- American VG6275T100-V 3 80-Gallon (UEF 0.86)
- American VG8275T100-V 80-Gallon (UEF 0.86)
- GSW WATER HEATERS 6G75100-PDVH0-3 80-Gallon (UEF 0.86)
- GSW WATER HEATERS 8G-75100-PDV-H06-4 80-Gallon (UEF 0.86)
- RELIANCE WATER HEATERS 6-75-TPDT 3 80-Gallon (UEF 0.86)
Frequently asked questions
Is the A. O. Smith GDHE-75 3 80-Gallon ENERGY STAR certified?
Yes, the A. O. Smith GDHE-75 3 80-Gallon holds a current ENERGY STAR certification for water heating efficiency (UEF 0.86).
How much does the A. O. Smith GDHE-75 3 80-Gallon cost to run per year?
About $286 per year at national average energy rates, based on its certified annual energy use under the DOE test draw pattern. Your rate and usage change this figure.
What venting does the A. O. Smith GDHE-75 3 80-Gallon use?
The A. O. Smith GDHE-75 3 80-Gallon uses Power Vent venting with 2 / 3 in vent connections. Matching the existing vent type is usually the cheapest replacement path.
Is the A. O. Smith GDHE-75 3 80-Gallon a smart water heater?
No, the A. O. Smith GDHE-75 3 80-Gallon is not connected-capable — it has no app connectivity or demand-response support.
Sources
- data.energystar.gov (retrieved 2026-07-17)