RELIANCE WATER HEATERS GCRL-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 this unit: the RELIANCE WATER HEATERS GCRL-30R 4** gas tank uses 185 therms of natural gas a year. That figure holds at the medium draw pattern, the standard daily hot-water usage DOE tests against. It is 0 therms from its class median of 185 therms, ranking 89th lowest 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
- 55 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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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 0.6 · Grade F Price it on your ZIP
This site computes the 185 therms per year; the registry does not publish it. The figure starts from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.6 for this model. That value is applied to the DOE test's daily hot-water draw for the medium pattern. The underlying rating comes from the DOE CCD, retrieved 2026-09-19. Against the 288 models registered as a gas tank at the medium draw pattern, this unit's use is equal to the class median of 185 therms. The difference is 0 therms. It ranks 89th lowest energy use of 288, which places it in the second-lowest quarter of its class for energy use.
This model lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 55 gallons. Its rated volume is 29 gallons. The 185 therms figure describes a household whose daily hot-water use matches the DOE test's medium draw. It does not describe a household whose daily use differs from that draw. For such a household, an energy figure is not available on this page. To compare other registered models by fuel, space and size, use the water heater selector by fuel, space and size. To check a unit of the same class by model number, use find a same-class replacement by model number.
This text does not state a running cost. The cost of 185 therms a year depends on the reader's state average residential gas price. The cost calculator on your own ZIP applies that price to this model's figure. The steps behind that result are set out in how the annual cost is calculated. An installed price range is not published for the RELIANCE WATER HEATERS GCRL-30R 4**. Its ratings, including the 0.6 UEF and the 29-gallon rated volume, lie outside the range the cost database's model was fitted on. The range is not stretched past that limit, so this page gives no installed price.
DOE CCD · 2026-09-19