ARISTON PV50TLN*-65*
0.71 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).
For a check of this unit: the ARISTON PV50TLN*-65* uses 238 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 22 therms below the 260 therms median of the 414 gas tank models registered at that draw pattern.
Energy use per year
238 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 84 of 414, lowest energy first.
Solid line: this model (238 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
- 0.71 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
- 107 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 47 gal DOE CCD · 2026-09-19
What it costs to install
$2,184–$4,146 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 ARISTON model on file
What this brand files, by heater type.
UEF 0.71 · Grade E Price it on your ZIP
This site computed the 238 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. This model's rated UEF is 0.71. The annual figure therefore describes the test's fixed daily volume, not a household's measured use. Among the 414 gas tank models registered at the high draw pattern, this model ranks 84th lowest in energy use. That rank places it in the lowest quarter of its class for energy use at that draw. The source is the DOE CCD, retrieved 2026-09-19. The page on how the annual energy and cost figures are calculated sets out each input.
The high draw pattern stands for a larger household, or one where showers and laundry overlap. This unit's first hour rating, the gallons of hot water available in the first hour from a full tank, is 107 gallons. Its rated volume is 47 gallons. If a home's busiest hour needs more than 107 gallons of hot water, the rating does not cover that demand. A home with lighter daily use than the high draw pattern is not described by the 238 therms figure. This data gives no annual figure for this model at other draw patterns. To compare other units, use the water heater selector by fuel, space and size. To match an existing unit within the same class, find a same-class replacement by model number.
The running cost is not stated in this text, because it depends on your state's average residential gas price. The input is the 238 therms figure at the high draw pattern; your rate decides the result. The cost calculator for your own ZIP computes the cost from that figure and your state's average residential gas price. At the same rate and the same draw pattern, the 22 therms gap below the 260 therms class median carries into the cost comparison. Your actual bill is not available here, because it depends on your own hot-water use and your own rate. The installed price range appears in its own block, with its source and date. It is a modeled installed-cost range, not a quote.
DOE CCD · 2026-09-19