A. O. Smith GCRL-40 4**
A. O. Smith GCRL-40 4** is in the DOE listing as of Oct 26, 2026.
It has a labeled size of 40 gallons, a certified storage volume of 38 gallons, a certified UEF of 0.58, and a certified first-hour rating of 67 gallons of hot water.
Its advertised UEF of 0.58 from A. O. Smith matches the certified 0.58 (Read Oct 5, 2026).
- Gas storage water heater
- 10 listed models
Not listed as ENERGY STAR certified on Oct 26, 2026.
Certified figures
- Storage volume
- 38gallons
- UEF
- 0.58Uniform energy factor
- First-hour rating
- 67gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 40 gal, nominal size | 38 gal storage volume | A. O. Smith | Read Oct 5, 2026 |
| Size | 38.2 gal | 38 gal storage volume | A. O. Smith | Read Oct 5, 2026 |
| UEF | 0.58 | 0.58 | A. O. Smith | Read Oct 5, 2026 |
| UEF | up to 0.58 | 0.58 | A. O. Smith | Read Oct 5, 2026 |
| First-hour rating | 67 gal | 67 gal | A. O. Smith | Read Oct 5, 2026 |
Certified figures by listed model
| Model number | Storage volume (gal) | UEF | First-hour rating (gal) | Recovery efficiency | Draw pattern |
|---|---|---|---|---|---|
| G12-S4040NVR 4** | 38 | 0.58 | 67 | 78% | Medium |
| G6-S4040NVR 4** | 38 | 0.58 | 67 | 78% | Medium |
| G6-S4040PVR 4*1 | 38 | 0.58 | 67 | 78% | Medium |
| G9-S4040NVR 4** | 38 | 0.58 | 67 | 78% | Medium |
| GCRL-40 4** | 38 | 0.58 | 67 | 78% | Medium |
| GCRL-40 4*1 | 38 | 0.58 | 67 | 78% | Medium |
| HWRL-40 4** | 38 | 0.58 | 67 | 78% | Medium |
| HWRL-40 4*1 | 38 | 0.58 | 67 | 78% | Medium |
| XCRL-40 4** | 38 | 0.58 | 67 | 78% | Medium |
| XCRL-40 4*1 | 38 | 0.58 | 67 | 78% | 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 67 gallons of hot water in the test's first hour. That is 29 gallons more than its tank holds, since it reheats during the hour. Among 763 gas storage models, 552 have a higher first-hour rating. The median gas storage model gives 78 gallons in the first hour of the test.
It was not listed as ENERGY STAR certified on Oct 26, 2026. In tests, 58% of the energy went to hot water, so its UEF is 0.58. Its test ran at the medium level of daily hot water use. Of 288 gas storage models with the same draw pattern, 230 have a higher UEF and 11 a lower one. On its draw pattern, the median gas storage UEF is 0.60. The water took in 78% of the energy used to reheat it (its recovery efficiency).
A tag or quote may show any of its 10 model numbers. Its test figures match those of 5 other basic models. They are listed under 5 other brands, one each.
Also listed as
They carry every figure in the table above.
- Every A. O. Smith 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
- Changes to an advertised figure after the date beside it.