ARISTON PV50SLN*-65*
0.69 UEF DOE CCD · 2026-09-19Grade F: 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 ARISTON PV50SLN*-65*, it uses 245 therms of natural gas a year at the federal test's daily hot-water draw. That figure belongs to the high draw pattern, the standard daily hot-water usage DOE tests against. It sits 15 therms below the 260 therms median of the 414 gas tank models registered at that pattern.
Energy use per year
245 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 130 of 414, lowest energy first.
Solid line: this model (245 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
- 0.69 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
- 110 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
$2,068–$3,846 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 0.69 · Grade F Price it on your ZIP
The 245 therms figure is computed by this site and is not taken from the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, with the test's daily draw. The draw used is the one DOE sets for the high draw pattern. For this model the UEF is 0.69, as listed in DOE's Compliance Certification Database retrieved 2026-09-19. Among the 414 models registered as a gas tank at the high draw pattern, it ranks 130th for lowest energy use. That puts it in the second-lowest quarter of its class for energy use. A household drawing more hot water than the test assumes will use more gas than 245 therms, and one drawing less will use less. The steps behind the figure are set out in how the annual cost is calculated.
The high draw pattern describes a larger household, or one where showers and laundry overlap. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 110 gallons. Its rated volume is 47 gallons, which is the tank size the registry lists for this model. The 245 therms figure applies to homes whose daily hot-water use resembles the high draw pattern. For a smaller household with lower daily use, this page has no energy figure, because none is available at a lower draw pattern. Whether a home needs more than 110 gallons in its busiest hour is not something the registry data can answer. To compare other sizes or fuels, the selector by fuel, space and size filters registered models on those terms.
The running cost is not stated in this text, because it depends on your own gas rate. The page takes your state's average residential gas price from your ZIP and applies it to 245 therms a year. Compared with the class median of 260 therms, this model uses 15 therms less gas a year at the same draw. What that difference is worth also depends on your local rate, so no amount is given here. The cost calculator on your own ZIP shows the result for your state's average price. The installed-cost range shown in its own block is a modeled range with its source and date, not a quote. If you are checking a like-for-like swap, you can find a same-class replacement by model number.
DOE CCD · 2026-09-19