RELIANCE WATER HEATERS GPDL-40 3**
RELIANCE WATER HEATERS GPDL-40 3** is in the DOE listing as of Oct 26, 2026.
- Gas storage water heater
- 2 listed models
Not listed as ENERGY STAR certified on Oct 26, 2026.
Its figures are also listed under A. O. Smith GPDL-40 3**.
Certified figures
- Storage volume
- 38gallons
- UEF
- 0.68Uniform energy factor
- First-hour rating
- 74gallonsHot water in the first hour
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| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| 6 40HBPDS 3*1 | 38 | 0.68 | 74 | 79% | Medium |
| 6-40-YBPDS 3** | 38 | 0.68 | 74 | 79% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 38 gallons in the test, 2 gallons less than its 40-gallon sold size. It delivers 74 gallons of hot water in the test's first hour. Reheating lets it give 36 gallons beyond the 38 gallons in its tank. Among 763 gas storage models, 466 have a higher first-hour rating. Among gas storage models, the median first-hour rating is 78 gallons.
On Oct 26, 2026, this heater was not listed as ENERGY STAR certified. In the test, 32% of its energy does not reach the hot water (UEF 0.68). Its test simulated a day of medium hot water use (its draw pattern). Among 288 gas storage models on its draw pattern, 4 have a higher UEF. A UEF of 0.60 is the median for its type and draw pattern. The water took in 79% of the energy used to reheat it (its recovery efficiency).
Its 2 model numbers are 6 40HBPDS 3*1 and 6-40-YBPDS 3**. There are 6 more basic models with the same test figures. Each of the 6 other brands lists one of them. You can find the whole group on the page for the A. O. Smith GPDL-40 3**.
It may qualify for 2 rebate programs in 2 states.
Also listed as
They carry every figure in the table above.
Rebates
| Program | State | Status | Program page |
|---|---|---|---|
| Xcel Energy MINNESOTA RESIDENTIAL ENERGY EFFICIENCY PROGRAMS (gas storage, gas tankless) | MN | 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.
- Every RELIANCE WATER HEATERS basic model
- Every 40-gallon gas storage water heater
- Every gas storage water heater
- The most-searched gas storage models side by side
Not covered
- Advertised figures. We have none on file for this model.