FRIEDRICH PROG39S-38U RH62 EC1*
0.59 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).
Checking this listing: the FRIEDRICH PROG39S-38U RH62 EC1*, a gas tank, uses 188 therms of natural gas a year at the medium draw pattern, the standard daily hot-water usage DOE tests against. That is 3 therms above the class median of 185 therms across 288 comparable models. It ranks 186th lowest for energy use.
Energy use per year
188 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 186 of 288, lowest energy first.
Solid line: this model (188 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
- 0.59 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
- 68 gal DOE CCD · 2026-09-19
- Rated Storage Volume the tank size in gallons
- 37 gal DOE CCD · 2026-09-19
What it costs to install
Not published: Installed cost range
This model's rated tank size lies outside the range NLR REMDB's cost model was fitted on, and the range is not stretched past it.
The annual energy figure on this page does not depend on this range and is unaffected.
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 · 2026-09-24What 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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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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Answered from what models in this size actually file.
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Gas-fired storage tanks, every size and draw pattern on file.
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What this brand files, by heater type.
UEF 0.59 · Grade G Price it on your ZIP
The 188 therms figure is not a registry value. This site computed it from the registry's UEF and the DOE test's daily hot-water draw for the medium pattern. UEF, the ratio of hot water delivered to energy used, is 0.59 for this model. The source is DOE CCD, retrieved 2026-09-19. Among the 288 models registered as a gas tank at this draw pattern, this one sits 3 therms above the class median of 185 therms. It ranks 186th lowest for energy use, which places it in the second-highest quarter of its class for energy use.
The figure applies to natural gas and to a household whose hot-water use matches the medium draw pattern. This model has a first hour rating, the gallons of hot water available in the first hour from a full tank, of 68 gallons, and a rated volume of 37 gallons. A household with a different daily draw would use a different amount than 188 therms, and this page does not calculate that. The figure is in therms of natural gas, so no comparison with an electric model is made here. To look at other options, the water heater selector filters by fuel, space and size, and the same-class replacement finder works from a model number.
Running cost is not written in the text because it depends on the state average residential gas price where the reader lives. The calculation applies that price to 188 therms, and the cost calculator does this from the reader's own ZIP. The steps are set out in how the annual cost is calculated. An installed price range is not published for the FRIEDRICH PROG39S-38U RH62 EC1*. Its ratings, a UEF of 0.59 and a first hour rating of 68 gallons, lie outside the range the cost database's model was fitted on, and the range is not stretched past it. The 3 therms above the class median is therefore not converted into a cost on this page.
DOE CCD · 2026-09-19