Rheem PROG40S-36N RH67 PV
0.65 UEF DOE CCD · 2026-09-19Grade D: 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 Rheem PROG40S-36N RH67 PV, a gas tank water heater, its annual energy use is 171 therms of natural gas. That figure applies to the medium draw pattern, the standard daily hot-water usage DOE tests against. It is 14 therms below the class median of 185 therms and ranks 33rd lowest of 288.
Energy use per year
171 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 185 therms for the 288 models registered in the same heater type and draw pattern; it ranks 33 of 288, lowest energy first.
Solid line: this model (171 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
- 0.65 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
- 66 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 39 gal DOE CCD · 2026-09-19
What it costs to install
$1,716–$2,950 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 Rheem model on file
What this brand files, by heater type.
UEF 0.65 · Grade D Price it on your ZIP
The 171 therms figure is calculated by this site. The registry does not list it. It 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 medium draw pattern. For this model the UEF is 0.65, from DOE CCD data retrieved 2026-09-19. The result applies only at that test draw. It does not describe a household whose daily hot-water use differs from the test. This site has no data on how far real use in a given home departs from the test draw. That gap is unknown here. The steps behind the figure are set out in how the annual cost is calculated.
The medium draw pattern stands for a typical household with a busy morning. This model's tank holds 39 gallons. Its first hour rating, the gallons of hot water available in the first hour from a full tank, is 66 gallons. A home that needs more than 66 gallons in its busiest hour falls outside what this rating covers. The 171 therms figure is also for natural gas only, so it does not apply to a home using another fuel. Whether this unit fits a given home's space is not available in the data. To compare units by those conditions, use the water heater selector by fuel, space and size.
This unit is compared with the 288 models registered as a gas tank at the medium draw pattern. Within that class it ranks 33rd lowest in energy use. Its 171 therms is 14 therms below the class median of 185 therms. That places it in the lowest quarter of its class for energy use. The running cost is not written here, because it depends on your state's average residential gas price. The page applies that price, looked up from your ZIP, to the 171 therms test figure. You can run that step in the cost calculator for your own ZIP. The installed price range on this page is a modeled range, not a quote.
DOE CCD · 2026-09-19