Richmond RTGH-95DVLN-3

This site computed the 182 therms figure. The registry does not publish it. The calculation starts from the registry's UEF, the ratio of hot water delivered to energy used, which is 0.93 for this model. The site applies that ratio to the DOE test's daily hot-water draw for the high pattern. The source is the DOE Compliance Certification Database (CCD), retrieved 2026-09-19. The comparison group is the 397 models registered as a gas tankless unit at the high draw pattern. Their median is 182 therms, and this model differs from it by 0 therms. Its rank of 183rd lowest puts it in the second-lowest quarter of the class for energy use. The figure holds only at the test's daily draw. A household that uses more or less hot water will use a different amount of gas, and this data does not give that amount.

The high draw pattern represents a larger household, or one where showers and laundry overlap. The registry lists this model's maximum flow rate in gallons per minute as 5.5. That rate is the ceiling on how much hot water the unit can supply at once. If a home often needs more than 5.5 at the same time, the listed rating does not cover that use. The registry does not say how the unit behaves above that rate, so it is unknown here. For a smaller household, the high-pattern figure is not the right reference. This data has no figure for this model at a lower draw pattern. To compare it with other units, use the water heater selector by fuel, space and size. To find a unit in the same class, use the same-class replacement search by model number.

This text does not give a running cost for the 182 therms of natural gas. That cost depends on your state's average residential gas price. The page computes it from your ZIP instead of giving one figure for every reader. The cost calculator on your own ZIP shows the result at your rate. The page on how the annual cost is calculated explains how the energy figure and the gas price are combined. This model's use differs from the class median of 182 therms by 0 therms. As a result, its cost at any given rate starts from the same annual energy as the median unit in its class. A modeled installed-cost range appears in its own block on this page, with its source and date. It is not a quote.