DoesTheMath

Richmond PROG40S-36N RH67 PV

0.65 UEF DOE CCD · 2026-09-19
D

Grade 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 verifying the Richmond PROG40S-36N RH67 PV, a gas tank heater, it uses 171 therms of natural gas a year. That figure belongs to the medium draw pattern, the standard daily hot-water usage DOE tests against. It sits 14 therms below the 185 therms median of its class.


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.

This model: 171 therms

Solid line: this model (171 therms). Dashed line: the class median.

Min 148 therms Median 185 therms Max 194 therms

DOE CCD · 2026-09-19

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What it costs to run where you live

Enter your ZIP to see what this unit costs to run a year at your state’s average natural gas price.


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) · 2026-04-01

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Safety 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 · 2026-09-24

What these figures mean

The 171 therms figure is computed by this site, not taken from the registry. 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. This model's UEF is 0.65. The source is the DOE Compliance Certification Database, retrieved 2026-09-19. Among the 288 models registered as a gas tank at the medium draw pattern, this model ranks 33rd lowest in energy use. That places it in the lowest quarter of its class for energy use. The data here gives no figure for other draw patterns, so the 14 therms gap to the 185 therms median holds only at the medium one. The site explains how the annual figure is calculated.

The medium draw pattern represents a typical household's daily hot-water use, including a busy morning. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 66 gallons. Its rated volume is 39 gallons. A household whose busiest hour stays within 66 gallons matches the conditions behind the 171 therms figure. A household that regularly needs more than 66 gallons in its busiest hour falls outside the test that produced it. The registry does not say how this model performs under heavier or lighter use than the medium draw pattern. If you are matching a unit being replaced, you can find a same-class replacement by model number. You can also compare other units in the selector by fuel, space and size.

This page does not state a running cost in the text. The cost of 171 therms of natural gas depends on your state's average residential gas price. For that reason, the page computes the cost from your ZIP code. The cost calculator on your own ZIP applies that rate to this model's annual use. This model uses 14 therms less than the 185 therms class median. At any single gas rate, its yearly cost is lower than a median model's by the price of that 14 therms. The installed price appears in its own block, with its source and date. It is a modeled installed-cost range, not a quote, and its figures are not repeated here.

DOE CCD · 2026-09-19

How this compares

The closest models in the same class — same fuel, type and draw pattern.


Keep going

UEF 0.65 · Grade D Price it on your ZIP