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RELIANCE WATER HEATERS GCBL-30R 4**

RELIANCE WATER HEATERS GCBL-30R 4** 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 GCBL-30R 4**.

Storage volume
29gallons
UEF
0.60Uniform energy factor
First-hour rating
65gallonsHot water in the first hour
See it among every gas storage model

Advertised and certified figures

RELIANCE WATER HEATERS GCBL-30R 4**: advertised and certified
RELIANCE WATER HEATERS GCBL-30R 4**: advertised and certified Size: advertised 30 gal, certified 29 gal (advertised nominal size, certified storage volume). Size: advertised 29 gal, certified 29 gal (certified storage volume). UEF: advertised 0.60, certified 0.60. First-hour rating: advertised 65 gal, certified 65 gal. Size · advertised nominal size, certified storage volume Advertised 30 gal Certified 29 gal Size · certified storage volume Advertised 29 gal Certified 29 gal UEF Advertised 0.60 Certified 0.60 First-hour rating Advertised 65 gal Certified 65 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 30 gal, nominal size 29 gal storage volume RELIANCE WATER HEATERS Read Oct 4, 2026
Size 29 gal 29 gal storage volume RELIANCE WATER HEATERS Read Oct 4, 2026
UEF 0.60 0.60 RELIANCE WATER HEATERS Read Oct 4, 2026
First-hour rating 65 gal 65 gal RELIANCE WATER HEATERS Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
6-30-NORBSR 4**290.606575%Medium
6-30-PORBSR 4*1290.606575%Medium

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

It holds 29 gallons in the test, 1 gallon less than its 30-gallon sold size. It delivers 65 gallons of hot water in the test's first hour. That is 36 gallons more than its tank holds, since it reheats during the hour. In the first hour, 600 of the 763 gas storage models give more hot water. The median gas storage model gives 78 gallons in the first hour of the test.

As of Oct 26, 2026, it was not listed as ENERGY STAR certified. In tests, 60% of the energy went to hot water, so its UEF is 0.60. The daily hot water use in the test, called its draw pattern, was medium. Among 288 gas storage models on its draw pattern, 88 have a higher UEF. Its UEF is the median for its type and draw pattern. When it reheats water in the test, 75% of the energy it uses ends up in the water.

It is sold as 6-30-NORBSR 4** and 6-30-PORBSR 4*1. There are 4 more basic models with the same test figures. Each of the 4 other brands lists one of them. You can find the whole group on the page for the A. O. Smith GCBL-30R 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.