FRIEDRICH PROG29-32N RH63 *

The figure of 185 therms is the natural gas this tank is estimated to use in a year at the medium draw pattern. This site computed it, not the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, which is 0.6 for this model, with the daily hot-water draw in the DOE test. The source is DOE CCD, retrieved 2026-09-19. Among the 288 gas tank models registered at this draw pattern, the model has the 89th lowest energy use. The class median is 185 therms, so the difference is 0 therms. That places it in the second-lowest quarter of its class for energy use.

The first hour rating, the gallons of hot water available in the first hour from a full tank, is 63 gallons for this model. The rated volume is 28 gallons. These ratings describe capacity, not energy use, so they do not change the 185 therms figure. The figure suits a household whose hot-water use resembles the medium draw pattern, a typical household. It does not describe a household with much lower or higher use, and this page has no energy figure for other draw patterns. To compare models by fuel, space and size, use the water heater selector. To look for a same-class replacement, use the replacement finder by model number.

Running cost is not stated in the text because it depends on the state average residential gas price, which differs from reader to reader. The quantity that gets priced is the 185 therms at the medium draw pattern. The cost calculator for your own ZIP applies that state average to it, and the methodology page explains how the annual cost is calculated. An installed price range is not published for this model. Its ratings lie outside the range the cost database's model was fitted on, and that range is not stretched past it. Any cost shown for this model therefore covers energy use only.