A. O. Smith GCR-30R 4**
A. O. Smith GCR-30R 4** is in the DOE listing as of Oct 26, 2026.
It has a labeled size of 30 gallons, a certified storage volume of 29 gallons, a certified UEF of 0.60, and a certified first-hour rating of 62 gallons of hot water.
Its advertised UEF of 0.60 from A. O. Smith matches the certified 0.60 (Read Oct 5, 2026).
- Gas storage water heater
- 5 listed models
Not listed as ENERGY STAR certified on Oct 26, 2026.
Certified figures
- Storage volume
- 29gallons
- UEF
- 0.60Uniform energy factor
- First-hour rating
- 62gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 30 gal, nominal size | 29 gal storage volume | A. O. Smith | Read Oct 5, 2026 |
| Size | 29 gal | 29 gal storage volume | A. O. Smith | Read Oct 5, 2026 |
| UEF | 0.60 | 0.60 | A. O. Smith | Read Oct 5, 2026 |
| UEF | up to 0.55 | 0.60 | A. O. Smith | Read Oct 5, 2026 |
| First-hour rating | 62 gal | 62 gal | A. O. Smith | Read Oct 5, 2026 |
| First-hour rating | 52 gal | 62 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 |
|---|---|---|---|---|---|
| G6-T3032NVR 4** | 29 | 0.60 | 62 | 73% | Medium |
| G6-T3032PVR 4*1 | 29 | 0.60 | 62 | 73% | Medium |
| GCR-30R 4** | 29 | 0.60 | 62 | 73% | Medium |
| GCR-30R 4*1 | 29 | 0.60 | 62 | 73% | Medium |
| XCR-30R 4** | 29 | 0.60 | 62 | 73% | Medium |
UEF is the uniform energy factor. A dash means the model has no such figure.
It holds 29 gallons in the test, 1 gallon less than its 30-gallon sold size. Starting full, it gives 62 gallons of hot water in its first hour of use. Reheating lets it give 33 gallons beyond the 29 gallons in its tank. Of 763 gas storage models, 671 give more hot water in the first hour. Among gas storage models, the median first-hour rating is 78 gallons.
As of Oct 26, 2026, it was not listed as ENERGY STAR certified. In tests, 60% of the energy it uses ends up as hot water (UEF 0.60). Its test simulated a day of medium hot water use (its draw pattern). Of 288 gas storage models with the same draw pattern, 88 have a higher UEF and 103 a lower one. Its UEF is the median for its type and draw pattern. Of the energy spent to reheat water, 73% goes into it (its recovery efficiency).
It is sold under 5 model numbers in all. There are 5 more basic models with the same test figures. Each of them is listed under a different brand.
Also listed as
They carry every figure in the table above.
- Every A. O. Smith basic model
- Every 30-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.