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American GCB-30R 4**

American GCB-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 GCB-30R 4**.

Storage volume
29gallons
UEF
0.60Uniform energy factor
First-hour rating
62gallonsHot water in the first hour
See it among every gas storage model

Advertised and certified figures

American GCB-30R 4**: advertised and certified
American GCB-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 62 gal, certified 62 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 62 gal Certified 62 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 30 gal, nominal size 29 gal storage volume American Read Oct 4, 2026
Size 29 gal 29 gal storage volume American Read Oct 4, 2026
UEF 0.60 0.60 American Read Oct 4, 2026
First-hour rating 62 gal 62 gal American Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
GB61-30T32R 4**290.606274%Medium
GB61-30T32R 4*1290.606274%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 62 gallons of hot water in the test's first hour. Reheating lets it give 33 gallons beyond the 29 gallons in its tank. Of 763 gas storage models, 671 give more hot water in the first hour. The median gas storage model gives 78 gallons in the first hour of the test.

On Oct 26, 2026, this heater was not listed as ENERGY STAR certified. In tests, 60% of the energy it uses ends up as hot water (UEF 0.60). In the test, daily hot water use was set to medium (its draw pattern). 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. The water took in 74% of the energy used to reheat it (its recovery efficiency).

It is the basic model for GB61-30T32R 4** and GB61-30T32R 4*1. Its test figures match those of 5 other basic models. They are listed under 5 other brands, one each. For the full group, see the A. O. Smith GCB-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.