AMERICAN STANDARD WATER HEATERS GN30L2-3-*
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).
If you are checking this model, the AMERICAN STANDARD WATER HEATERS GN30L2-3-* gas tank uses 185 therms of natural gas a year at the medium draw pattern, the standard daily hot-water usage DOE tests against. That equals its class median of 185 therms, a difference of 0 therms. It ranks 89th lowest in energy use of 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
- 66 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 185 therms figure is not a registry field. This site computes it from the model's UEF, the ratio of hot water delivered to energy used, which the registry lists as 0.6. It also uses the DOE test's daily hot-water draw for the medium pattern. The inputs come from the DOE Compliance Certification Database (CCD), retrieved 2026-09-19. The figure is modelled at the test draw, not measured in any particular home. The comparison group is the 288 models registered as a gas tank at the medium draw pattern. Within that group, the model ranks 89th lowest for energy use, which places it in the second-lowest quarter of its class.
The medium draw pattern stands for a typical household with a busy morning of hot-water use. On that pattern the model lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 66 gallons. Its rated volume is 29 gallons. A plumber or homeowner matching a household to that usage can read the 185 therms figure as it stands. A household that draws much more or much less hot water than the test assumes will not use the same amount of gas. The registry gives no adjusted figure for that case, so actual use there is unknown. The water heater selector by fuel, space and size filters other models. A same-class replacement search by model number lists units in this class.
This page does not state a running cost for the 185 therms of natural gas the GN30L2-3-* uses a year. That cost depends on the average residential gas price in the reader's state, which the text does not assume. The cost calculator for your own ZIP applies that state price to the model's annual use. The steps behind that result are set out in how the annual cost is calculated. An installed price range for the GN30L2-3-* is not available. The model's ratings lie outside the range the cost database's model was fitted on. The site does not stretch that model past its fitted range, so no installed price is shown here.
DOE CCD · 2026-09-19