AMERICAN FMDV-50 2**
0.57 UEF DOE CCD · 2026-09-19Grade G: 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 the energy figure for the AMERICAN FMDV-50 2**, a gas tank water heater. At the medium draw pattern, the standard daily hot-water usage DOE tests against, the unit uses 194 therms of natural gas a year. That is 9 therms above the class median of 185 therms across 288 models.
Energy use per year
194 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 above the median of 185 therms for the 288 models registered in the same heater type and draw pattern; it ranks 278 of 288, lowest energy first.
Solid line: this model (194 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
- 0.57 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
- 47 gal DOE CCD · 2026-09-19
What it costs to install
Not published: Installed cost range
This model's UEF 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
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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Is a 50-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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Gas-fired storage tanks, every size and draw pattern on file.
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Every AMERICAN model on file
What this brand files, by heater type.
UEF 0.57 · Grade G Price it on your ZIP
The registry lists a UEF, the ratio of hot water delivered to energy used, of 0.57 for this model. This site computed 194 therms from that UEF and the DOE test's daily hot-water draw for the medium draw pattern. The registry itself does not publish the annual figure. The underlying data comes from DOE CCD, retrieved 2026-09-19. Among the 288 models registered as a gas tank at this draw pattern, this one is 278th lowest for energy use. That places it in the highest quarter of its class for energy use. It sits 9 therms above the class median of 185 therms.
This figure suits a reader checking a quote or a listing for a household near the medium draw pattern. 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 47 gallons. The figure suits less well a household whose daily use differs from that draw pattern. This page does not estimate annual use for other patterns. Because 194 therms is 9 therms above the 185 therms class median, other units may be worth comparing. The selector by fuel, space and size and the same-class replacement search by model number list alternatives.
Running cost is not written here because it depends on your state's average residential gas price. The cost calculator on your own ZIP applies that price to 194 therms. The result holds for the medium draw pattern only. The method for the annual cost is documented separately. An installed price range is not published for this model. Its ratings lie outside the range the cost database's model was fitted on. Those ratings are a UEF of 0.57 and a first hour rating of 67 gallons. The range is not stretched past that limit.
DOE CCD · 2026-09-19