FRIEDRICH PROG50-42N RH67 PV

The 249 therms figure is computed by this site, not published by the registry. It starts from the registry's UEF, the ratio of hot water delivered to energy used. For this model the UEF is 0.68. This site then applies the daily hot-water draw that the DOE test uses for the high draw pattern. The source is DOE CCD, retrieved 2026-09-19. A household that draws more or less hot water than the test assumes will see a different yearly total. Against the class median of 260 therms, this model sits 11 therms lower. It ranks 164th lowest in energy use of 414 gas tank models at the high draw pattern, in the second-lowest quarter of its class. The page on how the annual cost is calculated shows the full method.

The high draw pattern describes a larger household, or one where showers and laundry overlap. This model's first hour rating, the gallons of hot water available in the first hour from a full tank, is 78. That rating goes with a rated volume of 48 gallons. The energy figure of 249 therms applies only to that draw. A household with a lighter draw than the test assumes should not expect the same yearly use. This data gives no class comparison for first hour rating, so it does not show how 78 compares with the other 414 models. To narrow options by fuel, space and size, the water heater selector covers those inputs.

Running cost is not stated in this text, because it depends on your state's average residential gas price. At 249 therms a year, the cost is that yearly use multiplied by your gas price per therm. The cost calculator does this for your own ZIP code. The gap of 11 therms from the 260 therms class median can be priced the same way, at the same rate. The modeled installed-cost range is shown in its own block, with its source and date. It is a modeled range, not a quote, and it is not restated here. Annual energy for other draw patterns is not available for this model on this page. To find a same-class replacement, search by model number.