ECOSENSE RHE40S

The figure of 204 therms is computed by this site, not by the registry. It combines the registry's UEF of 0.83, the ratio of hot water delivered to energy used, with the daily hot-water draw the DOE test assigns to the high draw pattern. The source is DOE CCD, retrieved 2026-09-19. It applies only to natural gas at that federal draw. A household that draws more or less hot water will use a different amount, and this page does not estimate it. The class is the 414 models registered as a gas tank at the high draw pattern. Their median is 260 therms, so this model sits 56 therms below it. At 25th lowest, it is in the lowest quarter of its class for energy use.

The energy figure describes a larger household, or one where showers and laundry overlap, because that is what the high draw pattern represents. The first hour rating, the gallons of hot water available in the first hour from a full tank, is 87 gallons, and the rated volume is 37 gallons. Compare those two ratings with your own busiest hour of hot-water use; this page does not judge whether they meet it. The 204 therms does not describe a smaller household drawing less than the test draw, and it does not describe any fuel other than natural gas. To narrow models by fuel, space and size, use the water heater selector.

The running cost is not stated here because it depends on your state's average residential gas price. The 56 therms gap to the class median of 260 therms is a difference in energy, not in cost. To apply your own rate to the 204 therms at the high draw pattern, use the cost calculator with your ZIP. The steps behind that calculation are in 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 the range is not stretched past it. To look up a same-class model by its number, use find a same-class replacement.