Ruud PROG40-38N RH62
0.58 UEF DOE CCD · 2026-09-19Grade G: where this UEF sits among the 288 models in its class, lowest (G) to highest (A). A position, not an official label. How the grade is set
A gas tank, medium draw pattern (a typical three- or four-person household, about 55 gallons on a busy morning).
If you are checking the Ruud PROG40-38N RH62, it uses 191 therms of natural gas a year under the medium draw pattern, the standard daily hot-water usage DOE tests against. That figure applies at the test's daily hot-water draw. It is 6 therms above the 185 therms median of the 288 gas tank models at that draw pattern.
Energy use per year
191 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 185 therms for the 288 models registered in the same heater type and draw pattern; it ranks 231 of 288, lowest energy first.
Solid line: this model (191 therms). Dashed line: the class median.
Min 148 therms Median 185 therms Max 194 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
- 0.58 DOE CCD · 2026-09-19 Compared only with other models registered as a gas tank at the medium draw pattern.
- Draw Pattern the standard daily usage profile DOE tests the unit against
- Medium 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
- 64 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
$1,293–$1,862 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
-
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.
-
Find a water heater that fits
Three questions — fuel, hot water need, install space — narrow every model on file to the ones that fit.
-
What a water heater costs to run
Prices a unit's efficiency against your own utility's filed tariff for your ZIP code.
-
Is a 40-gallon water heater enough?
Answered from what models in this size actually file.
-
Water heaters
Every model on file with the Department of Energy, by heater type.
-
All gas tank water heaters
Gas-fired storage tanks, every size and draw pattern on file.
-
Every Ruud model on file
What this brand files, by heater type.
UEF 0.58 · Grade G Price it on your ZIP
This site computed the 191 therms figure. The registry does not list it. It 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 medium draw pattern. For this model the UEF is 0.58, as listed in the DOE Compliance Certification Database, retrieved 2026-09-19. The figure therefore describes the test's daily draw, not a particular home. A household that draws more hot water than the test would likely use more gas than 191 therms. A household that draws less would likely use less. The registry does not show how far real use differs from the test draw. The steps behind the figure are in how the annual energy and cost figures are calculated.
Within its class, this model ranks 231st lowest in energy use out of 288 gas tank models at the medium draw pattern. That puts it near the high end of the class for energy use, 6 therms above the 185 therms median. The class includes only models with the same heater type and draw pattern, so the rank does not compare it with heat pump or tankless units. The rated volume is 38 gallons. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 64 gallons. The medium draw pattern stands for a typical household with a busy morning. If a home needs more than 64 gallons in its busiest hour, the rating does not cover that use. To compare listed energy use, you can find a same-class replacement by model number.
This text does not state the running cost. The cost depends on the average residential gas price in your state, so the page calculates it from your ZIP. It applies that price to the 191 therms figure. The 191 therms figure applies only at the test's daily draw, and the calculated cost has the same limit. The 6 therms gap to the class median is also not a fixed cost difference. Its cost depends on your gas rate. To see the cost at your own rate, use the cost calculator for your ZIP. The installed price range appears in its own block on this page, with its source and date. That range is a modeled estimate of installed cost, not a quote from an installer.
DOE CCD · 2026-09-19