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AMERICAN STANDARD WATER HEATERS GSN30T1-3-*

AMERICAN STANDARD WATER HEATERS GSN30T1-3-* is in the DOE listing as of Oct 26, 2026.

It has a labeled size of 30 gallons, a certified storage volume of 29 gallons, a certified UEF of 0.60, and a certified first-hour rating of 72 gallons of hot water.

Its advertised UEF of 0.60 from AMERICAN STANDARD WATER HEATERS matches the certified 0.60 (Read Oct 5, 2026).

  • Gas storage water heater
  • 1 listed model

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

Storage volume
29gallons
UEF
0.60Uniform energy factor
First-hour rating
72gallonsHot water in the first hour
See it among every gas storage model

Advertised and certified figures

AMERICAN STANDARD WATER HEATERS GSN30T1-3-*: advertised and certified
AMERICAN STANDARD WATER HEATERS GSN30T1-3-*: 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 72 gal, certified 72 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 72 gal Certified 72 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 30 gal, nominal size 29 gal storage volume AMERICAN STANDARD WATER HEATERS Read Oct 5, 2026
Size 29 gal 29 gal storage volume AMERICAN STANDARD WATER HEATERS Read Oct 5, 2026
UEF 0.60 0.60 AMERICAN STANDARD WATER HEATERS Read Oct 5, 2026
First-hour rating 72 gal 72 gal AMERICAN STANDARD WATER HEATERS Read Oct 5, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
GSN30T1-3-*290.607277%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. Over one hour from a full tank, it gave 72 gallons in the test (its first-hour rating). That is 43 gallons more than its tank holds, since it reheats during the hour. Of 763 gas storage models, 488 give more hot water in the first hour. The median gas storage model gives 78 gallons in its first hour.

It was not listed as ENERGY STAR certified on Oct 26, 2026. In tests, 60% of the energy it uses ends up as hot water (UEF 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. On its draw pattern, its UEF is also the median gas storage UEF. The water took in 77% of the energy used to reheat it (its recovery efficiency).

Its test figures match those of 3 other basic models. Of those, one or more are under the Ariston and Lennox brands.

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.