Ruud RTG-70DVLN-1

The 206 therms figure is not printed in the registry. This site computes it from two inputs. The first is the model's UEF, the ratio of hot water delivered to energy used, listed as 0.82. The second is the daily hot-water draw that the DOE test sets for the high draw pattern. The UEF comes from DOE's Compliance Certification Database (CCD), retrieved 2026-09-19. The result therefore holds only at the federal test's daily draw. A household that draws more or less hot water each day will use a different amount of gas. That amount is not available on this page. The steps behind the figure are set out in how the annual energy and cost figures are calculated.

The class here is the 397 models registered as a gas tankless unit at the high draw pattern. That pattern stands for a larger household, or one where showers and laundry overlap. Within it, the RTG-70DVLN-1 ranks 229th lowest energy use. That places it in the second-highest quarter of its class for energy use. The registry also lists a maximum flow rate in gallons per minute of 4.1 for this model. A reader matching a unit to that household profile can use these figures to confirm the listing. A reader who wants a model below the 182 therms median will not find this one there. Other models in the same class can be listed through the same-class replacement search by model number.

No running cost is stated in this text. It depends on the reader's state average residential natural gas price. The page therefore computes it from the reader's ZIP, using the 206 therms test-draw figure. The same rate can be applied to other models in the ZIP-based water heater cost calculator. At any single rate, the 24 therms gap to the class median becomes a cost gap. The size of that gap depends on the rate, so it is not given here. The installed price range appears in its own block, with its source and date. It is a modeled installed-cost range, not a quote from a seller or plumber.