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Richmond PRO+G55-45U RH59 EC1*

Richmond PRO+G55-45U RH59 EC1* is in the DOE listing as of Oct 26, 2026.

  • Gas storage water heater
  • 2 listed models

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

Its figures are also listed under Rheem PRO+G55-45U RH59 EC1*.

Storage volume
55gallons
UEF
0.62Uniform energy factor
First-hour rating
99gallonsHot water in the first hour
See it among every gas storage model

Advertised and certified figures

Richmond PRO+G55-45U RH59 EC1*: advertised and certified
Richmond PRO+G55-45U RH59 EC1*: advertised and certified Size: advertised 55 gal, certified 55 gal (advertised nominal size, certified storage volume). Size: advertised 55 gal, certified 55 gal (certified storage volume). UEF: advertised 0.62, certified 0.62. First-hour rating: advertised 99 gal, certified 99 gal. Size · advertised nominal size, certified storage volume Advertised 55 gal Certified 55 gal Size · certified storage volume Advertised 55 gal Certified 55 gal UEF Advertised 0.62 Certified 0.62 First-hour rating Advertised 99 gal Certified 99 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 55 gal, nominal size 55 gal storage volume Richmond Read Oct 5, 2026
Size 55 gal 55 gal storage volume Richmond Read Oct 5, 2026
UEF 0.62 0.62 Richmond Read Oct 5, 2026
First-hour rating 99 gal 99 gal Richmond Read Oct 5, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
12G55-45FN*550.629976%High
6G55-45FN*550.629976%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. It delivers 99 gallons of hot water in the test's first hour. Its tank holds 55 gallons, so reheating adds 44 gallons during the first hour. Of 763 gas storage models, 89 give more hot water in the first hour. The median gas storage model gives 78 gallons in its first hour.

On Oct 26, 2026, this heater was not listed as ENERGY STAR certified. In tests, 62% of the energy went to hot water, so its UEF is 0.62. The daily hot water use in the test, called its draw pattern, was high. Among 434 gas storage models on its draw pattern, 386 have a higher UEF. A UEF of 0.66 is the median for its type and draw pattern. Of the energy spent to reheat water, 76% goes into it (its recovery efficiency).

Its 2 model numbers are 12G55-45FN* and 6G55-45FN*. All of its test figures are shared by 2 other basic models. The Rheem and Ruud brands list one or more of them. You can find the whole group on the page for the Rheem PRO+G55-45U RH59 EC1*.

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.