A. O. Smith GCRX-55 2**
A. O. Smith GCRX-55 2** is in the DOE listing as of Oct 26, 2026.
It has a labeled size of 55 gallons, a certified storage volume of 55 gallons, a certified UEF of 0.62, and a certified first-hour rating of 83 gallons of hot water.
Its advertised UEF of 0.62 from A. O. Smith matches the certified 0.62 (Read Oct 5, 2026).
- Gas storage water heater
- 13 listed models
Not listed as ENERGY STAR certified on Oct 26, 2026.
Certified figures
- Storage volume
- 55gallons
- UEF
- 0.62Uniform energy factor
- First-hour rating
- 83gallonsHot water in the first hour
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| Figure | Advertised | Certified | Advertiser | Read |
|---|---|---|---|---|
| Size | 55 gal, nominal size | 55 gal storage volume | A. O. Smith | Read Oct 5, 2026 |
| Size | 55 gal | 55 gal storage volume | A. O. Smith | Read Oct 5, 2026 |
| UEF | 0.62 | 0.62 | A. O. Smith | Read Oct 5, 2026 |
| First-hour rating | 83 gal | 83 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 |
|---|---|---|---|---|---|
| BT-60 2** | 55 | 0.62 | 83 | 74% | High |
| BT-60 2*1 | 55 | 0.62 | 83 | 74% | High |
| GCRX-55 2** | 55 | 0.62 | 83 | 74% | High |
| GCRX-55 2*1 | 55 | 0.62 | 83 | 74% | High |
| GCRX-55L 2** | 55 | 0.62 | 83 | 74% | High |
| GCRX-55L 2*1 | 55 | 0.62 | 83 | 74% | High |
| HWRX-55 2** | 55 | 0.62 | 83 | 74% | High |
| HWRX-55 2*1 | 55 | 0.62 | 83 | 74% | High |
| HWRX-55L 2** | 55 | 0.62 | 83 | 74% | High |
| HWRX-55L 2*1 | 55 | 0.62 | 83 | 74% | High |
| XCRX-55 2** | 55 | 0.62 | 83 | 74% | High |
| XCRX-55 2*1 | 55 | 0.62 | 83 | 74% | High |
| XCRX-55L 2** | 55 | 0.62 | 83 | 74% | High |
UEF is the uniform energy factor. A dash means the model has no such figure.
Sold as 55 gallons, it holds 55 gallons in the test. Over one hour from a full tank, it gave 83 gallons in the test (its first-hour rating). Its tank holds 55 gallons, so reheating adds 28 gallons during the first hour. Among 763 gas storage models, 242 have a higher first-hour rating. The median gas storage model gives 78 gallons in the first hour of the test.
On Oct 26, 2026, this heater was not listed as ENERGY STAR certified. In tests, 62% of the energy it uses ends up as hot water (UEF 0.62). Its test ran at the high level of daily hot water use. Its UEF is lower than that of 386 of the 434 gas storage models with its draw pattern. For its type and draw pattern, the UEF runs from 0.61 to 0.90. When it reheats water in the test, 74% of the energy it uses ends up in the water.
A tag or quote may show any of its 13 model numbers. Its test figures match those of 4 other basic models. Each of the 4 other brands lists one of them.
Also listed as
They carry every figure in the table above.
- Every A. O. Smith basic model
- Every 50-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.