DoesTheMath

U.S. CRAFTMASTER FMHR-30 4**

0.6 UEF DOE CCD · 2026-09-19
F

Grade 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).

The U.S. CRAFTMASTER FMHR-30 4** gas tank heater you are verifying uses 185 therms of natural gas a year. That figure applies at the medium draw pattern, the standard daily hot-water usage DOE tests against. It equals the class median of 185 therms and ranks 89th for lowest energy use among 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.

This model: 185 therms

Solid line: this model (185 therms). Dashed line: the class median.

Min 148 therms Median 185 therms Max 194 therms

DOE CCD · 2026-09-19

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What it costs to run where you live

Enter your ZIP to see what this unit costs to run a year at your state’s average natural gas price.


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
63 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

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 · 2026-09-24

What these figures mean

The 185 therms figure is calculated by this site. The registry does not publish it. It combines the model's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw. This model's UEF is 0.6, taken from the DOE CCD and retrieved 2026-09-19. The figure assumes the test's daily draw, so a household using more or less hot water will use a different amount of gas. The registry data does not show how large that difference would be. The 0 therms difference from the class median also applies only under the test condition. The page on how the annual figure is calculated lists each step.

The first hour rating, the gallons of hot water available in the first hour from a full tank, is 63 gallons for this model. Its rated volume is 29 gallons. Compare the first hour rating with a household's busiest hour of hot-water use. If a home's peak hour needs more than 63 gallons, this rating does not cover it. If the peak hour needs less, it falls within the rating. The registry gives no figure for how the unit performs above that demand, so that remains unknown. To compare other sizes or fuels against the same test, use the selector by fuel, space and size.

This page does not give a running cost because it depends on your state's average residential gas price. The page calculates that cost from your ZIP, using the 185 therms figure at the medium draw pattern. The cost calculator for your own ZIP runs the same calculation for other models. No installed price range is published for the FMHR-30 4**. Its ratings fall outside the range the cost database's model was built on, and the range is not extended beyond it. To check models registered as a gas tank at the medium draw pattern, use the same-class replacement search by model number.

DOE CCD · 2026-09-19

How this compares

The closest models in the same class — same fuel, type and draw pattern.


Keep going

UEF 0.6 · Grade F Price it on your ZIP