AMERICAN STANDARD WATER HEATERS GSN50L2-3-*
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).
If you are checking the AMERICAN STANDARD WATER HEATERS GSN50L2-3-*, it uses 260 therms of natural gas a year. That figure is at the high draw pattern, the standard daily hot-water usage DOE tests against. It sits 0 therms from the class median of 260 therms and ranks 204th lowest in energy use of 414 gas tank models.
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
- 78 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 48 gal DOE CCD · 2026-09-19
What it costs to install
$1,849–$3,282 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 0.65 · Grade G Price it on your ZIP
The registry does not print the 260 therms figure. This site calculated it from the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for the high draw pattern. This model's UEF is 0.65, from the DOE Compliance Certification Database, retrieved 2026-09-19. The result holds only at the federal test's daily draw. A household that draws more hot water than the test would use more gas, and one that draws less would use less. The data does not show how much more or less gas a given home would use. The steps behind the figure are set out in how the annual cost is calculated.
The high draw pattern stands for a larger household, or one where showers and laundry overlap. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 78 gallons. Its rated volume is 48 gallons. For a smaller household, the 260 therms figure does not describe actual use, because the test assumes the high pattern's daily draw. Among the 414 models registered as a gas tank at the high draw pattern, this model ranks 204th lowest in energy use. That places it in the second-lowest quarter of its class. A reader who needs a lower annual figure at the same draw pattern would look at models ranked ahead of it. To compare same-class units, use the same-class replacement search by model number.
The running cost is not written here, because it depends on the reader's own state average residential gas price. The page calculates it from your ZIP, using the 260 therms figure at the high draw pattern. This model's energy use is 0 therms from the class median of 260 therms. So at any given gas price, its running cost matches that of a model at the class median. A different state price changes the cost for every model in the class, but it does not change this model's rank of 204th. Enter your ZIP in the water heater running-cost calculator to see the cost at your rate. The installed price range appears in its own block, as a modeled range rather than a quote.
DOE CCD · 2026-09-19