FRIEDRICH PROG50-40N RH62

The figure of 260 therms 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, which is 0.65 for this model. That value is combined with the DOE test's daily hot-water draw for the high draw pattern. The source is the DOE CCD, retrieved 2026-09-19. The class is the 414 models registered as a gas tank at this draw pattern, and its median is 260 therms, so the difference is 0 therms. The model ranks 204th lowest in energy use of 414, which places it in the second-lowest quarter of its class. That ranking describes energy use under federal test conditions only.

The 260 therms figure applies only to the high draw pattern, meaning a larger household, or one where showers and laundry overlap. A household that matches that description is the one this number describes. The unit has a first hour rating, the gallons of hot water available in the first hour from a full tank, of 76 gallons, and a rated volume of 48 gallons. Those are registry entries measured at test conditions. This page does not judge whether they cover a particular home's peak demand. A household with lighter use is not described by this figure, and energy use at other draw patterns is not available for this model here. To compare units by fuel, space and size, use the water heater selector.

Running cost is not written in this text, because it depends on the state average residential gas price where the reader lives. The annual energy of 260 therms at the high draw pattern is the fixed input, and the price per therm is the variable. The cost calculator applies the state average residential gas price for a ZIP to that figure, and the calculation method lists the steps. The modeled installed-cost range appears in its own block on the page with its source and date, as a range and not a quote. To look for a unit in the same class, search by model number for PROG50-40N RH62. The class median of 260 therms is the reference point for that comparison.