AMERICAN STANDARD WATER HEATERS GN30T2-3-*
0.6 UEF DOE CCD · 2026-09-19Grade F: where this UEF sits among the 288 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
A gas tank, medium draw pattern (a typical three- or four-person household, about 55 gallons on a busy morning).
You are checking one gas tank model against the registry. The AMERICAN STANDARD WATER HEATERS GN30T2-3-* uses 185 therms a year. That figure belongs to the medium draw pattern, the standard daily hot-water usage DOE tests against. It equals the class median of 185 therms, a difference of 0 therms, among 288 models.
Energy use per year
185 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 185 therms for the 288 models registered in the same heater type and draw pattern; it ranks 89 of 288, lowest energy first.
Solid line: this model (185 therms). Dashed line: the class median.
Min 148 therms Median 185 therms Max 194 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
- 0.6 DOE CCD · 2026-09-19 Compared only with other models registered as a gas tank at the medium draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Medium 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
- 67 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 29 gal DOE CCD · 2026-09-19
What it costs to install
Not published: Installed cost range
This model's rated tank size lies outside the range NLR REMDB's cost model was fitted on, and the range is not stretched past it.
The annual energy figure on this page does not depend on this range and is unaffected.
Safety 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 30-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 0.6 · Grade F Price it on your ZIP
The registry lists a UEF, the ratio of hot water delivered to energy used, of 0.6 for this model. This site did not take the annual figure from the registry. It computed 185 therms from that UEF and the DOE test's daily hot-water draw for the medium draw pattern. The source is DOE CCD, retrieved 2026-09-19. The model has the 89th lowest energy use of 288, which is the second-lowest quarter of its class. Its difference from the class median is 0 therms, so on energy alone it matches the middle of its class.
The figure suits a household whose hot-water use resembles the medium draw pattern, a typical household on a busy morning. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 67 gallons here. The rated volume is 29 gallons. A household that draws more than the medium pattern should compare those gallons with its own use. Its actual gas use can differ from 185 therms a year, because that figure applies only to the test draw. The selector by fuel, space and size lists other units by those criteria.
The running cost is not stated here because it depends on your state average residential gas price. It equals 185 therms multiplied by that price per therm, at the medium draw pattern. The cost calculator for your own ZIP applies that price to the figure, and the methodology page explains how the annual cost is calculated. An installed price range is not published for this model. Its ratings, 67 gallons first hour and 29 gallons rated volume, lie outside the range the cost database's model was fitted on. The range is not stretched past it.
DOE CCD · 2026-09-19