AMERICAN STANDARD WATER HEATERS GSN50T1-3-*
0.65 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 414 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
A gas tank, high draw pattern (a larger household, or one where showers and laundry overlap).
For a larger household, or one where showers and laundry overlap, this gas tank uses 260 therms of natural gas a year. That figure is for the high draw pattern, the standard daily hot-water usage DOE tests against. It equals the class median of 260 therms, a difference of 0 therms.
Energy use per year
260 therms a year
Computed by this site from the registry's UEF and the federal test's daily hot-water draw for this draw pattern. What it costs depends on the natural gas rate where you live.
That is equal to the median of 260 therms for the 414 models registered in the same heater type and draw pattern; it ranks 204 of 414, lowest energy first.
Solid line: this model (260 therms). Dashed line: the class median.
Min 188 therms Median 260 therms Max 277 therms
What it costs to run where you live
What the registry files
- UEF (Uniform Energy Factor) how much hot water you get for each unit of energy the heater uses
- 0.65 DOE CCD · 2026-09-19 Compared only with other models registered as a gas tank at the high draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- High DOE CCD · 2026-09-19
- First Hour Rating how many gallons of hot water the unit can deliver in one hour, starting from a full tank
- 86 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 47 gal DOE CCD · 2026-09-19
What it costs to install
$1,834–$3,245 installed
Not a quote — a modeled range of what installers have charged for this class of unit; your price will vary with labor rates, access, and local code requirements.
Escalation indexes: equipment (BLS PPI) latest available: August 2026; labor (BLS ECI) latest available: April 2026 to June 2026.
NLR REMDB (BLS PPI/ECI escalated) · 2026-04-01Safety record
- Water Heating Technologies recalls American Standard gas water heaters 2016-05-24 Covers some units only: Models beginning GN and GSN sold May 2015 through February 2016; the firm lists exact serial numbers. Check the serial number on your rating plate.
Checked against the CPSC recall database. CPSC does not publish a model-level match for this product category, so this list is curated by hand from the manufacturer's recall filings.
CPSC · 2026-09-24What these figures mean
How this compares
The closest models in the same class — same fuel, type and draw pattern.
Keep going
How every figure on this page is calculated
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Find what replaces your water heater
Enter the model number off your old unit and see what is on file today, with the yearly cost difference.
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Three questions — fuel, hot water need, install space — narrow every model on file to the ones that fit.
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What a water heater costs to run
Prices a unit's efficiency against your own utility's filed tariff for your ZIP code.
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Is a 50-gallon water heater enough?
Answered from what models in this size actually file.
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Water heaters
Every model on file with the Department of Energy, by heater type.
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All gas tank water heaters
Gas-fired storage tanks, every size and draw pattern on file.
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Every AMERICAN STANDARD WATER HEATERS model on file
What this brand files, by heater type.
UEF 0.65 · Grade G Price it on your ZIP
The registry lists AMERICAN STANDARD WATER HEATERS GSN50T1-3-* with a UEF, the ratio of hot water delivered to energy used, of 0.65. The annual figure was computed by this site, not by the registry. This site used that UEF and the DOE test's daily hot-water draw for the high draw pattern. The result is 260 therms of natural gas a year. The figure applies only to that test draw and to natural gas. No measurement from your home enters the figure. The source is DOE CCD, retrieved 2026-09-19. The methodology page explains how the annual cost is calculated.
Among the 414 models registered as a gas tank at the high draw pattern, this unit ranks 204th lowest in energy use. That places it in the second-lowest quarter of its class for energy use. Its 260 therms equals the class median of 260 therms, so the difference is 0 therms. At the test draw, a model at the class median would use the same energy as this one. The rank and the median both refer to the same 414 models. This data does not show how the model compares on price or features. To look up other models by model number, use the same-class replacement search.
The high draw pattern describes a larger household, or one where showers and laundry overlap. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 86. Its rated volume is 47 gallons. A household on a different draw pattern should not read 260 therms as its own use. Running cost depends on your state's average residential gas price, so this page writes no cost. The cost calculator applies that price from your ZIP to this figure. Whether the first hour rating covers your peak demand is not in this data. For other fuels or sizes, try the water heater selector.
DOE CCD · 2026-09-19