LOCHINVAR GPVNT-50 1**
0.72 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 LOCHINVAR GPVNT-50 1**, a gas tank water heater, it uses 235 therms of natural gas a year. That figure belongs to the high draw pattern, the standard daily hot-water usage DOE tests against. It sits 25 therms below the 260 therms median of the 414 gas tank models registered at that pattern.
Energy use per year
235 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 50 of 414, lowest energy first.
Solid line: this model (235 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
- 0.72 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
- 85 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
$2,258–$4,333 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 LOCHINVAR model on file
What this brand files, by heater type.
UEF 0.72 · Grade E Price it on your ZIP
The 235 therms figure is computed by this site, not taken from the registry. It starts from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.72 for this model under the DOE test. The second input is the DOE test's daily hot-water draw for the high draw pattern. The registry values come from the DOE Compliance Certification Database, retrieved 2026-09-19. The high draw pattern describes a larger household, or one where showers and laundry overlap. A household that draws a different amount of hot water each day will use a different amount of gas than 235 therms. The registry does not say how large that difference would be for this model. Each step behind the figure is set out in how the annual cost is calculated.
Among the 414 gas tank models registered at the high draw pattern, this unit ranks 50th lowest in energy use. That places it in the lowest quarter of its class for energy use under the federal test. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 85 gallons. Its rated volume is 48 gallons. These two values describe the household the test assumes: one with high daily hot-water use. For a household with lower use, the registry gives no energy figure at another draw pattern for this model, so that figure is not available here. Anyone matching a replacement can find a same-class replacement by model number and compare against the old unit's figures.
The text on this page states no running cost. The cost of 235 therms of natural gas a year depends on your state's average residential gas price. For that reason, the page computes it from your ZIP instead of printing one figure for every reader. The 25 therms gap to the class median at the high draw pattern becomes a cost difference only after your own rate is applied. You can run that calculation in the cost calculator for your own ZIP. The installed-cost range appears in its own block on this page, with its source and date. It is a modeled installed-cost range, not a quote from an installer. This commentary does not restate the range's figures.
DOE CCD · 2026-09-19