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RELIANCE WATER HEATERS GCFL-50 1**

RELIANCE WATER HEATERS GCFL-50 1** 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 A. O. Smith GCFL-50 1**.

Storage volume
49gallons
UEF
0.69Uniform energy factor
First-hour rating
78gallonsHot water in the first hour
See it among every gas storage model

Advertised and certified figures

RELIANCE WATER HEATERS GCFL-50 1**: advertised and certified
RELIANCE WATER HEATERS GCFL-50 1**: 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 0.69, certified 0.69. First-hour rating: advertised 78 gal, certified 78 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 0.69 Certified 0.69 First-hour rating Advertised 78 gal Certified 78 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 50 gal, nominal size 49 gal storage volume RELIANCE WATER HEATERS Read Oct 4, 2026
Size 49 gal 49 gal storage volume RELIANCE WATER HEATERS Read Oct 4, 2026
UEF 0.69 0.69 RELIANCE WATER HEATERS Read Oct 4, 2026
First-hour rating 78 gal 78 gal RELIANCE WATER HEATERS Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
6-50-GBFS 1**490.697879%High
9-50-GKFS 1**490.697879%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. It delivers 78 gallons of hot water in the test's first hour. Its tank holds 49 gallons, so reheating adds 29 gallons during the first hour. In the first hour, 366 of the 763 gas storage models give more hot water. Its first-hour rating matches the median for gas storage models.

As of Oct 26, 2026, it was not listed as ENERGY STAR certified. In tests, 69% of the energy it uses ends up as hot water (UEF 0.69). Its test ran at the high level of daily hot water use. Of 434 gas storage models with the same draw pattern, 151 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, 79% goes into it (its recovery efficiency).

It is the basic model for 6-50-GBFS 1** and 9-50-GKFS 1**. All of its test figures are shared by 4 other basic models. Each of them is listed under a different brand. You can find the whole group on the page for the A. O. Smith GCFL-50 1**.

It may qualify for 2 rebate programs.

Also listed as

They carry every figure in the table above.

Rebates

ProgramStateStatusProgram page
Xcel Energy MINNESOTA RESIDENTIAL ENERGY EFFICIENCY PROGRAMS (gas storage, gas tankless) MN May qualify Its own page
Avista Home and small commercial: HVAC and water heating incentives (gas storage) WA May qualify Its own page

Programs change their terms. Check the program's own page before you buy.

Updated Oct 26, 2026 · Methodology

Not covered

  • Changes to an advertised figure after the date beside it.