STATE GUC-30 4**
0.59 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).
Checking the STATE GUC-30 4**? This gas tank uses 188 therms of natural gas a year at the federal test's draw for the medium draw pattern, the standard daily hot-water usage DOE tests against. That is 3 therms above the 185 therms median of the 288 gas tank models registered at that draw pattern.
Energy use per year
188 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 186 of 288, lowest energy first.
Solid line: this model (188 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
- 0.59 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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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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Gas-fired storage tanks, every size and draw pattern on file.
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Every STATE model on file
What this brand files, by heater type.
UEF 0.59 · Grade G Price it on your ZIP
The 188 therms figure is computed by this site, not taken from the registry. 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. The registry lists this model's UEF as 0.59. The source is the DOE CCD, retrieved 2026-09-19. Among the 288 gas tank models at the medium draw pattern, this unit ranks 186th lowest in energy use. That places it in the second-highest quarter of its class for energy use. The method behind the annual energy and cost figures sets out each step of the calculation, including where the daily draw comes from.
The registry gives this unit a first hour rating, the gallons of hot water available in the first hour from a full tank, of 62 gallons. Its rated volume is 29 gallons. The medium draw pattern stands for a typical household's daily use, and the 188 therms figure holds only at that pattern's test draw. A household whose daily use is close to that pattern can read the figure as a reference point. A household that draws more hot water each day falls outside the test condition. For that case, this page has no annual energy figure, and none is estimated. A plumber checking a swap can find a same-class replacement by model number, or compare other units in the selector by fuel, space and size.
The running cost is not written in this text. It equals the 188 therms of natural gas at the medium draw pattern multiplied by the reader's state average residential gas price. That price differs by state, so the page computes the cost from the reader's ZIP. The cost calculator for your own ZIP shows the result on that rate. An installed price range is not published for this model. Its ratings, including the UEF of 0.59, lie outside the range the cost database's model was fitted on. The range is not stretched past that fit, so no installed price is available here. A reader whose daily use differs from the medium pattern should expect the calculated cost to differ too, by an amount not available here.
DOE CCD · 2026-09-19