AMERICAN GPDT-50 3**
0.72 UEF DOE CCD · 2026-09-19Grade E: 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).
Checking this unit for a larger household? AMERICAN GPDT-50 3** uses 235 therms of natural gas a year at the high draw pattern, the standard daily hot-water usage DOE tests against. That is 25 therms below the 260 therms median of 414 gas tank models at this draw pattern.
Energy use per year
235 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 below the median of 260 therms for the 414 models registered in the same heater type and draw pattern; it ranks 50 of 414, lowest energy first.
Solid line: this model (235 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
- 0.72 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
- 79 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
$2,258–$4,333 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
No CPSC recall names this model.
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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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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Answered from what models in this size actually file.
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Gas-fired storage tanks, every size and draw pattern on file.
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What this brand files, by heater type.
UEF 0.72 · Grade E Price it on your ZIP
The registry lists AMERICAN GPDT-50 3** with a UEF, the ratio of hot water delivered to energy used, of 0.72. This site, not the registry, computes the annual figure of 235 therms of natural gas from that UEF and the DOE test's daily hot-water draw for the high draw pattern. The figure describes test conditions and is not a measurement of any installed unit. Among the 414 models registered as a gas tank at the high draw pattern, this model ranks 50th lowest for energy use, which places it in the lowest quarter of its class. The gap to the 260 therms class median is 25 therms, on the lower side. The calculation steps are set out on the methodology page, and the source is DOE CCD, retrieved 2026-09-19.
The high draw pattern stands for a larger household, or one where showers and laundry overlap. For this model the registry gives a first hour rating, the gallons of hot water available in the first hour from a full tank, of 79 gallons, and a rated volume of 48 gallons. The registry data does not say how many people that first hour rating serves, so this page does not make that match. The 235 therms figure applies to a household that matches the high draw pattern. It does not describe a household with a lighter or heavier daily draw, because it holds only at the federal test's draw. Readers narrowing options by fuel, space and size can use the water heater selector.
The running cost is not written in this text because it depends on the state average residential gas price, which differs by reader. The cost calculator takes a ZIP code and applies that state price to the 235 therms figure, so the result stays tied to the high draw pattern and to 25 therms below the class median only as far as the test conditions hold. The modeled installed-cost range appears in its own block on this page with its source and date. It is a modeled range, not a quote. To compare this model with others of the same class, search a replacement by model number. Registry changes made after 2026-09-19 are not reflected here.
DOE CCD · 2026-09-19