State GCRT-50 4**

State GCRT-50 4** is in the DOE listing as of Oct 26, 2026.

Gas storage water heater
10 listed models

Not listed as ENERGY STAR certified on Oct 26, 2026.

Its figures are also listed under A. O. Smith GCRT-50 4**.

Storage volume: 48gallons
UEF: 0.61Uniform energy factor
First-hour rating: 89gallonsHot water in the first hour

Advertised and certified figures

State GCRT-50 4**: advertised and certified

State GCRT-50 4**: advertised figures, where and when read
Figure	Advertised	Certified	Advertiser	Read
Size	50 gal, nominal size	48 gal storage volume	State	Read Oct 5, 2026
Size	48 gal	48 gal storage volume	State	Read Oct 5, 2026
UEF	0.61	0.61	State	Read Oct 5, 2026
UEF	up to 0.61	0.61	State	Read Oct 5, 2026
First-hour rating	89 gal	89 gal	State	Read Oct 5, 2026

Certified figures by listed model

State GCRT-50 4**: certified figures by listed model
Model number	Storage volume (gal)	UEF	First-hour rating (gal)	Recovery efficiency	Draw pattern
GS6-50-RCT 4**	48	0.61	89	77%	High
GS6-50-RCT 4*1	48	0.61	89	77%	High
GS6-50-RCTL 4**	48	0.61	89	77%	High
GS6-50-RCTL 4*1	48	0.61	89	77%	High
GSX-50-RCT 4**	48	0.61	89	77%	High
GSX-50-RCT 4*1	48	0.61	89	77%	High
GW8-50-RCT 4**	48	0.61	89	77%	High
GW8-50-RCT 4*1	48	0.61	89	77%	High
GW8-50-RCTL 4**	48	0.61	89	77%	High
GW8-50-RCTL 4*1	48	0.61	89	77%	High

UEF is the uniform energy factor. A dash means the model has no such figure.

It holds 48 gallons in the test, 2 gallons less than its 50-gallon sold size. It delivers 89 gallons of hot water in the test's first hour. Its tank holds 48 gallons, so reheating adds 41 gallons during the first hour. In the first hour, 129 of the 763 gas storage models give more hot water. 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 tests, 61% of the energy went to hot water, so its UEF is 0.61. The daily hot water use in the test, called its draw pattern, was high. Its UEF is lower than that of 419 of the 434 gas storage models with its draw pattern. A UEF of 0.66 is the median for its type and draw pattern. When it reheats water in the test, 77% of the energy it uses ends up in the water.

All 10 of its model numbers carry the same certified figures. There are 5 more basic models with the same test figures. Each of them is listed under a different brand. For the full group, see the A. O. Smith GCRT-50 4** page.

Also listed as

They carry every figure in the table above.

Updated Oct 26, 2026 · Methodology

Not covered

Changes to an advertised figure after the date beside it.

State GCRT-50 4**

Certified figures

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Advertised and certified figures

Certified figures by listed model

Also listed as

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