AMERICAN STANDARD WATER HEATERS GSN30T2-3-*
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 water heater's figures, AMERICAN STANDARD WATER HEATERS GSN30T2-3-* uses 185 therms of natural gas a year at the medium draw pattern, the standard daily hot-water usage DOE tests against. That is 0 therms from the class median of 185 therms among 288 gas tank 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
- 69 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
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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 figure of 185 therms was computed by this site, not by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.6 with the daily hot-water draw the DOE test assigns to the medium draw pattern. The source is the DOE CCD, retrieved 2026-09-19. Among the 288 gas tank models in the same class, this unit ranks 89th lowest energy use, which places it in the second-lowest quarter. The class median is 185 therms, so the difference from the median is 0 therms. The calculation is described on the methodology page.
The figure applies only to the stated conditions: natural gas and the medium draw pattern. A household whose daily hot-water use differs from that pattern will use a different amount, and this data gives no estimate for other patterns. The rated volume is 29 gallons. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 69 gallons. This page does not judge whether those ratings meet a particular household's peak demand. Readers who want to compare options by fuel, space and size can use the water heater selector.
The running cost is not stated in this text. It depends on the state average residential gas price, so the cost calculator computes it from your ZIP code and the 185 therms shown here. A different gas rate changes the cost but not the energy use at the medium draw pattern. An installed price range is not published for this model, because its ratings lie outside the range the cost database's model was fitted on, and that range is not stretched past its limit. To look for a same-class unit, the replacement finder searches by model number, such as GSN30T2-3-*.
DOE CCD · 2026-09-19