AMERICAN STANDARD WATER HEATERS GSN50T2-3-*
0.63 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 anyone checking this unit: the AMERICAN STANDARD WATER HEATERS GSN50T2-3-* uses 269 therms of natural gas a year. That figure applies at the high draw pattern, the standard daily hot-water usage DOE tests against. It sits 9 therms above its class median of 260 therms, ranking 320th lowest energy use of 414.
Energy use per year
269 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 above the median of 260 therms for the 414 models registered in the same heater type and draw pattern; it ranks 320 of 414, lowest energy first.
Solid line: this model (269 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
- 0.63 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
- 82 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
$1,717–$2,944 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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Find a water heater that fits
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 0.63 · Grade G Price it on your ZIP
The yearly figure of 269 therms is computed by this site, not published by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily draw for the high pattern. For this model the UEF is 0.63. The registry data comes from the DOE Compliance Certification Database, retrieved 2026-09-19. The yearly total holds only at that test draw. A home whose daily hot-water use differs from the test draw will see a different yearly total. This page does not know your actual usage, so it cannot adjust the figure for it. Each step is set out in how this site calculates annual energy and cost.
The high draw pattern stands for a larger household, or one where showers and laundry overlap. This model lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 82 gallons. Its rated volume is 47 gallons. The class is the 414 models registered as a gas tank at the high draw pattern. The rank given above puts this model in the highest quarter of that class for energy use. A smaller household with lighter, spread-out use does not match the high pattern, so the 269 therms figure does not describe that household's use. To compare other units in the same class, find a same-class replacement by model number.
The running cost is not stated in this text. It depends on the average residential natural gas price in your state, so the page computes it from your ZIP. At 269 therms a year, that cost follows the gas rate in your state, and this text does not estimate it. The 9 therms gap to the class median turns into cost the same way, at that same rate. To see both figures, use the cost calculator for your own ZIP. The installed price range shown elsewhere on this page is a modeled range, not a quote, and it carries its own source and date.
DOE CCD · 2026-09-19