U.S. CRAFTMASTER GCB-30R 4**
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 verifying the U.S. CRAFTMASTER GCB-30R 4** gas tank, 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 its class median of 185 therms, a difference of 0 therms, and ranks 89th lowest in energy use of 288.
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
- 62 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 · 2026-09-24What 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 U.S. CRAFTMASTER model on file
What this brand files, by heater type.
UEF 0.6 · Grade F Price it on your ZIP
The 185 therms figure comes from this site's calculation. The registry does not publish it. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the DOE test's daily hot-water draw for the medium pattern. This model's UEF is 0.6. The registry inputs come from the DOE Compliance Certification Database, retrieved 2026-09-19. The result holds only at the federal test's daily draw. A household that draws more hot water than the test will use more gas than 185 therms, and one that draws less will use less. The page on how the annual energy and cost figures are calculated sets out each step of this conversion.
The medium draw pattern stands for a typical household with a busy morning of hot-water use. Besides annual energy, this tank lists a rated volume of 29 gallons. It also carries a first hour rating, the gallons of hot water available in the first hour from a full tank, of 62 gallons. Compare that rating with a household's busiest hour. If that hour stays within 62 gallons, the rating covers it. If that hour needs more, this model's rating does not cover it. The registry data does not say how the tank performs beyond that rating. To check size, fuel and space together, use the water heater selector by fuel, space and size.
Running cost is not stated in this text. It depends on your state's average residential gas price, so the page applies that price to 185 therms using your ZIP. The cost calculator for your own ZIP runs the same calculation for other rates. An installed price range is not available for this model either. Its ratings lie outside the range the cost database's model was fitted on, and the range is not stretched past it. For a plumber or seller matching this unit, the class is gas tanks at the medium draw pattern. The rank given above is measured within that class. The tool to find a same-class replacement by model number lists the other models in it.
DOE CCD · 2026-09-19