RELIANCE WATER HEATERS G6N-UT5040NVR 5**
0.63 UEF DOE CCD · 2026-09-19Grade G: 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 this model's figure, here it is. The RELIANCE WATER HEATERS G6N-UT5040NVR 5** gas tank uses 269 therms of natural gas per year under the high draw pattern, the standard daily hot-water usage DOE tests against. That sits 9 therms above the 260 therms median of the 414 gas tank models registered at the same pattern.
Energy use per year
269 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 260 therms for the 414 models registered in the same heater type and draw pattern; it ranks 320 of 414, lowest energy first.
Solid line: this model (269 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
- 0.63 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
- 76 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
$1,732–$2,981 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
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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 RELIANCE WATER HEATERS model on file
What this brand files, by heater type.
UEF 0.63 · Grade G Price it on your ZIP
This site computes the 269 therms figure; the registry does not publish it. The calculation 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 high draw pattern. For this model the UEF is 0.63. Both inputs come from the DOE CCD, retrieved 2026-09-19. The figure therefore describes the federal test's draw, not a particular home. A household that draws more hot water than the test assumes will use more gas than 269 therms per year. A household that draws less will use less. This site has no measured use for this model in real homes, so the gap for any given house is unknown. The method is set out on the page about how the annual cost is calculated.
The high draw pattern stands for 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 76 gallons. Its rated volume is 48 gallons. These two values describe capacity, not efficiency. On energy use at the test draw, it ranks 320th lowest of 414 in its class. That places it in the highest quarter of the class for energy use, so most registered models at this pattern use less gas under the same test. The figures fit a household close to the high pattern. For a smaller household, the high-pattern figure does not apply directly. To compare other models at the same pattern, you can find a same-class replacement by model number.
The running cost is not stated in this text. It depends on your state's average residential gas price, so the page computes it from your ZIP code. That rate is applied to 269 therms per year at the high draw pattern. The same rate also sets how much the 9 therms gap to the class median adds each year. Your actual bill also depends on how much hot water your household draws, which this site does not know. To see the figure for your own rate, use the cost calculator on your own ZIP. The installed price range appears in its own block on this page, with its source and date. It is a modeled installed-cost range, not a quote.
DOE CCD · 2026-09-19