STATE GUF-50 1**
0.7 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).
If you are checking the STATE GUF-50 1**, this gas tank water heater uses 242 therms of natural gas a year. That figure applies at the high draw pattern, the standard daily hot-water usage DOE tests against. It sits 18 therms below the 260 therms median of the 414 gas tank models registered at that pattern.
Energy use per year
242 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 90 of 414, lowest energy first.
Solid line: this model (242 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
- 0.7 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
- 83 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
$2,141–$4,033 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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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 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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All gas tank water heaters
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 0.7 · Grade E Price it on your ZIP
This site calculated the 242 therms figure; the registry does not list it. The calculation uses two inputs. One is the model's UEF, the ratio of hot water delivered to energy used. The other is the DOE test's daily hot-water draw for the high pattern. The registered UEF is 0.7, from DOE CCD data retrieved 2026-09-19. Among the 414 gas tank models at the high pattern, this one ranks 90th lowest for energy use. That puts it in the lowest quarter of its class. The rank holds only at the federal test's draw, so a household drawing a different amount of hot water will use a different amount of gas. The steps from energy to cost are set out on the page explaining how the annual cost is calculated.
The high draw pattern describes a larger household, or one where showers and laundry overlap. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 83 gallons. The rated volume is 48 gallons. For a household that matches the high pattern, the 242 therms figure applies directly. A household that uses less hot water is not described by it. The data here does not give this model's energy use at a lower draw pattern, so that value is not available. The class comparison also covers only gas tank models. To compare other fuels or tank sizes, use the selector by fuel, space and size. To match this class by model number, use find a same-class replacement.
This text gives no running cost. The cost depends on the 242 therms and on the reader's state average residential gas price, and that price differs by state. The page calculates the cost from the reader's ZIP, and the cost calculator on your own ZIP shows the same calculation. The 18 therms gap below the class median is an energy difference at the federal test's draw. What it saves a given household per year depends on that household's gas rate and actual hot-water use, and both are unknown here. The installed-price range sits in its own block with its source and date. That range comes from a cost model. It is not a quote.
DOE CCD · 2026-09-19