Richmond RTG-70DVLN-1

This site computed the 206 therms figure; the registry does not list it. The calculation uses the registry's UEF, the ratio of hot water delivered to energy used, and the DOE test's daily hot-water draw for the high pattern. This model's UEF is 0.82, from DOE CCD data retrieved 2026-09-19. The 397 gas tankless models registered at the high draw pattern are ranked from lowest to highest energy use. This model ranks 229th, which puts it in the second-highest quarter of its class. The figure applies only at the federal test's daily draw. This page has no energy figure for other daily volumes. The method behind the annual energy and cost figures sets out each step of the calculation.

The high draw pattern stands for a larger household, or one where showers and laundry overlap. That is the usage behind this model's 206 therms rating. Its maximum flow rate in gallons per minute is 4.1. A plumber or homeowner can check that value against the fixtures likely to run at the same time. This model's rating fits less well if lowest energy use is the main requirement. Its rated use is 24 therms a year above the 182 therms class median, and it ranks 229th of 397. To see other listings in the same class, find a same-class replacement by model number.

The running cost is not stated in this text. It depends on the average residential gas price in the reader's state, so the page calculates it from the reader's ZIP. That calculation starts from the 206 therms figure at the high draw pattern. If your household uses more or less hot water than the federal test assumes, the cost will differ. This page cannot measure your actual usage, so it is unknown here. You can enter your own ZIP in the running-cost calculator. The installed price appears in its own block, with its source and date. That block shows a modeled installed-cost range, not a quote.