LOCHINVAR GUR 40 4**
0.64 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 verifying the LOCHINVAR GUR 40 4**, this gas tank water heater uses 264 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 4 therms above the 260 therms median of the 414 gas tank models registered at that pattern.
Energy use per year
264 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 236 of 414, lowest energy first.
Solid line: this model (264 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
- 0.64 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
- 38 gal DOE CCD · 2026-09-19
What it costs to install
$1,643–$2,763 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 40-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 LOCHINVAR model on file
What this brand files, by heater type.
UEF 0.64 · Grade G Price it on your ZIP
This site computes the 264 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 daily hot-water draw that the DOE test sets for the high draw pattern. For this model the UEF is 0.64. The inputs come from the DOE CCD, retrieved 2026-09-19. The page on how the annual figure is calculated sets out each step. Within its class, the model ranks 236th lowest energy use of 414. That places it in the second-highest quarter of the class for energy use. The gap to the class median is 4 therms a year at the test draw. The data does not show how that gap changes at other daily draws.
The high draw pattern describes a larger household, or one where showers and laundry overlap. This model lists a first hour rating, the gallons of hot water available in the first hour from a full tank, of 83 gallons. Its rated volume is 38 gallons. A plumber or seller checking a quote can match those figures against the unit's label. The 264 therms figure fits homes whose daily use is close to the DOE test draw for this pattern. A household that uses less hot water than that draw falls outside the condition behind the figure. The registry does not state this model's energy use at a lower draw, so that value is not available here. To compare models registered in the same class, find a same-class replacement by model number.
The text on this page gives no running cost. The cost of 264 therms of natural gas depends on your state's average residential gas price. The page computes it from your ZIP in a separate block, and the cost calculator for your own ZIP runs the same step for other models. The 4 therms gap to the class median also takes its cost value from that rate, so its cost in your area stays unknown until the rate is applied. Any cost built on 264 therms carries the same condition: the high draw pattern at the federal test's daily draw. The installed price range on this page is a modeled range with its own source and date. It is not a quote.
DOE CCD · 2026-09-19