Rheem RTG-70DVLN-1

The registry does not print the 206 therms figure. This site computes it from two inputs. The first is the unit's UEF, the ratio of hot water delivered to energy used, registered at 0.82. The second is the DOE test's daily hot-water draw for the high draw pattern. The UEF comes from DOE CCD data retrieved 2026-09-19. The page on how the annual figure is calculated sets out each step. The figure holds only at the federal test's daily draw. A home that draws more hot water each day will use more gas than 206 therms, and a home that draws less will use less. How much more or less for a given home is not available here.

The high draw pattern stands for a larger household, or one where showers and laundry overlap. The unit's registered maximum flow rate in gallons per minute is 4.1. The comparison class is the 397 models registered as gas tankless units at the high draw pattern. Within it, this model sits in the second-highest quarter for energy use, at 24 therms above the 182 therms median. For a household that uses much less hot water than the high pattern, the 206 therms figure does not describe its use. Figures for other draw patterns are not available on this page. You can compare models in the same class with the same-class replacement search by model number.

This text does not state a running cost. The cost depends on your state's average residential natural gas price, so the page computes it from your ZIP. That calculation uses 206 therms at the high draw pattern. The cost calculator for your own ZIP shows the result. The unit uses 24 therms more gas a year than the class median. At any given gas price, its running cost is therefore higher than that of a unit at the median. The installed-cost block elsewhere on this page is a modeled range, not a quote, and it shows its own source and date. This page does not say what your own installation would cost.