LOCHINVAR GCR-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).
Checking this model's energy figure? The LOCHINVAR GCR-30R 4** uses 185 therms of natural gas a year at the medium draw pattern, the standard daily hot-water usage DOE tests against. The class median for 288 gas tank models is 185 therms, a difference of 0 therms.
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
-
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.
-
Find a water heater that fits
Three questions — fuel, hot water need, install space — narrow every model on file to the ones that fit.
-
What a water heater costs to run
Prices a unit's efficiency against your own utility's filed tariff for your ZIP code.
-
Is a 30-gallon water heater enough?
Answered from what models in this size actually file.
-
Water heaters
Every model on file with the Department of Energy, by heater type.
-
All gas tank water heaters
Gas-fired storage tanks, every size and draw pattern on file.
-
Every LOCHINVAR model on file
What this brand files, by heater type.
UEF 0.6 · Grade F Price it on your ZIP
The figure of 185 therms is computed by this site, not by the registry. The registry lists a UEF, the ratio of hot water delivered to energy used, of 0.6 for this model. This site combines that value with the DOE test's daily hot-water draw for the medium draw pattern. The source is DOE CCD, retrieved 2026-09-19. The model has the 89th lowest energy use of 288, which places it in the second-lowest quarter of its class. The difference from the class median is 0 therms. Method details are in how the annual cost is calculated.
The figure of 185 therms applies to a household that matches the medium draw pattern: a typical three- or four-person home on a busy morning. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 62 gallons. Its rated volume is 29 gallons. A household that draws much more or much less hot water than the test assumes will see a different figure than 185 therms. The data does not say how these ratings match any single home's peak demand. The water heater selector filters by fuel, space and size.
Running cost depends on your state's average residential gas price, so this page states no cost figure. The cost calculator on your own ZIP applies that price to 185 therms at the medium draw pattern. The difference from the median is 0 therms. A median model in this class would use the same 185 therms at the same price. The installed price range is not published. This model's ratings lie outside the range the cost database's model was fitted on, and the range is not stretched past it. For a same-class replacement, find one by model number starting from GCR-30R 4**. Anything not shown here is not available, and this page does not estimate it.
DOE CCD · 2026-09-19