AMERICAN STANDARD WATER HEATERS GN30T1-3-*
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 the AMERICAN STANDARD WATER HEATERS GN30T1-3-*, it uses 185 therms of natural gas 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 across the 288 gas tank models at that draw pattern, a difference of 0 therms.
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
- 70 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
This site computed the 185 therms figure; the registry does not publish it. We combined the registry's UEF, the ratio of hot water delivered to energy used, of 0.6 with the DOE test's daily hot-water draw. That draw is the one set for the medium draw pattern, which stands for a typical household's use. The registry values come from the DOE CCD, retrieved 2026-09-19. The figure holds only at that test draw. A household that draws more or less hot water than the pattern assumes is not described by 185 therms. The 185 therms median is computed the same way for every model in the class, so the comparison is like for like. The steps are set out in the methodology behind these annual figures.
By energy use, the GN30T1-3-* ranks 89th lowest of the 288 gas tank models at the medium draw pattern. That places it in the second-lowest quarter of its class. Its 185 therms matches the class median, a gap of 0 therms. The registry lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 70 gallons. It also lists a rated volume of 29 gallons. The class comparison fits a household whose daily use is close to the medium draw pattern. It does not describe a home whose morning peak exceeds 70 gallons, because the ratings do not cover that case. To check a same-class alternative, use the replacement finder by model number.
The text on this page gives no running cost for the GN30T1-3-*. The cost of 185 therms of natural gas depends on your state's average residential gas price. For that reason the page computes it from your ZIP instead of stating it here. You can also run the figure in the cost calculator for your own ZIP. The energy figure stays fixed at 185 therms for the medium draw pattern; only the price applied to it changes with location. An installed price range is not available for this model. Its ratings lie outside the range the cost database's model was fitted on, and we do not stretch that range. Any installed price you hold comes from outside this page, and this page cannot confirm it.
DOE CCD · 2026-09-19