AMERICAN STANDARD WATER HEATERS PV50TLN*

The figure of 242 therms is computed by this site, not by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, of 0.7 with the DOE test's daily hot-water draw for the high draw pattern. The source is DOE CCD, retrieved 2026-09-19. The class median is 260 therms across the 414 models registered as a gas tank at this draw pattern. This model sits 18 therms below that median, which places it 90th lowest and in the lowest quarter of its class for energy use. The calculation is described in how the annual cost is calculated.

This model has a first hour rating, the gallons of hot water available in the first hour from a full tank, of 81 gallons. Its rated volume is 48 gallons. The high draw pattern describes a larger household, or one where showers and laundry overlap, so those two ratings are the ones to check against that kind of use. The energy figure does not describe a household whose real daily draw differs from the federal test, because that household would use more or less than 242 therms. Measured household use is not available in the registry data. To compare other fuels, space limits or sizes, the water heater selector covers them.

The running cost is not stated in this text because it depends on the state average residential gas price where you live. The page computes it from your ZIP, and no cost is estimated here. The cost calculator on your own ZIP applies your rate to the 242 therms shown above. The 18 therms gap from the class median of 260 therms also turns into a cost only at your rate. The modeled installed-cost range appears in its own block with its source and date, and it is a range, not a quote. To look for a same-class model, find a replacement by model number using PV50TLN*.