Ruud PROG40-40N RH62
0.66 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 checking the Ruud PROG40-40N RH62, this gas tank uses 256 therms of natural gas a year. That figure applies at the federal test's daily draw for the high draw pattern, the standard daily hot-water usage DOE tests against. It sits 4 therms below the 260 therms median of the 414 gas tank models at that pattern.
Energy use per year
256 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 192 of 414, lowest energy first.
Solid line: this model (256 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
- 0.66 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
- 84 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
$1,760–$3,064 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
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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 Ruud model on file
What this brand files, by heater type.
UEF 0.66 · Grade F Price it on your ZIP
The 256 therms figure is computed by this site, not taken from the registry. It uses the registry's UEF, the ratio of hot water delivered to energy used, which is 0.66 for this model. That UEF is combined with the DOE test's daily hot-water draw for the high draw pattern. The registry lists this model as a gas tank running on natural gas. Among the 414 gas tank models at this pattern, this one ranks 192nd lowest in energy use. The method behind the annual figure is described on the page on how the annual cost is calculated.
The first hour rating, the gallons of hot water available in the first hour from a full tank, is 84 gallons for this model. Its rated volume is 38 gallons, which is the tank size the registry lists for it. The 256 therms figure describes a home whose daily use matches the high draw pattern: a larger household, or one where showers and laundry overlap. For a home that uses less hot water each day, no energy figure is available on this page. The 256 therms value is computed only for the high draw pattern. To compare other sizes or fuels, use the water heater selector by fuel, space and size. To check other models registered in the same class, find a same-class replacement by model number.
The running cost for this model is not written in this text, because it depends on your state's average residential gas price. The page computes it from your ZIP, using the 256 therms of natural gas at the high draw pattern. The cost gap to the class median also depends on your rate, so it is not stated here either. The modeled installed-cost range appears in its own block on this page, with its source and date. That range is a model estimate, not a quote from an installer. Your own running cost is available from the cost calculator on your own ZIP. The energy data behind it comes from the DOE CCD, retrieved on 2026-09-19; any registry change after that date is unknown here.
DOE CCD · 2026-09-19