Hot Water List

State GURT-50RL 4**

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

  • Gas storage water heater
  • 1 listed model

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

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

Certified figures

Storage volume
49gallons
UEF
0.63Uniform energy factor
First-hour rating
92gallonsHot water in the first hour

Advertised and certified figures

State GURT-50RL 4**: advertised and certified
State GURT-50RL 4**: advertised and certified Size: advertised 50 gal, certified 49 gal (advertised nominal size, certified storage volume). Size: advertised 49 gal, certified 49 gal (certified storage volume). UEF: advertised 0.63, certified 0.63. First-hour rating: advertised 92 gal, certified 92 gal. Size · advertised nominal size, certified storage volume Advertised 50 gal Certified 49 gal Size · certified storage volume Advertised 49 gal Certified 49 gal UEF Advertised 0.63 Certified 0.63 First-hour rating Advertised 92 gal Certified 92 gal
State GURT-50RL 4**: advertised figures, where and when read
FigureAdvertisedCertifiedAdvertiserRead
Size 50 gal, nominal size 49 gal storage volume State Read Oct 5, 2026
Size 49 gal 49 gal storage volume State Read Oct 5, 2026
UEF 0.63 0.63 State Read Oct 5, 2026
First-hour rating 92 gal 92 gal State Read Oct 5, 2026

Certified figures by listed model

State GURT-50RL 4**: certified figures by listed model
Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
GS6-50-RCUTR 4**490.639277%High

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

It holds 49 gallons in the test, 1 gallon less than its 50-gallon sold size. Starting full, it gives 92 gallons of hot water in its first hour of use. Its tank holds 49 gallons, so reheating adds 43 gallons during the first hour. Among 763 gas storage models, 116 have a higher first-hour rating. Among gas storage models, the median first-hour rating is 78 gallons.

It was not listed as ENERGY STAR certified on Oct 26, 2026. In the test, 37% of its energy does not reach the hot water (UEF 0.63). The daily hot water use in the test, called its draw pattern, was high. Of 434 gas storage models with the same draw pattern, 339 have a higher UEF. For its type and draw pattern, the median UEF is 0.66. Of the energy spent to reheat water, 77% goes into it (its recovery efficiency).

All of its test figures are shared by 3 other basic models. Those basic models are sold with A. O. Smith, American, and Lochinvar as their brand names. You can find the whole group on the page for the A. O. Smith GURT-50RL 4**.

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.