Kiturami KGWH-150JFN

The registry lists this model with a UEF, the ratio of hot water delivered to energy used, of 0.98. This site combined that UEF with the DOE test's daily hot-water draw for the high draw pattern to reach 173 therms of natural gas a year. The registry does not publish that annual figure itself, so it is computed here from DOE CCD data retrieved on 2026-09-19. The class is the 397 models registered as a gas tankless unit at this draw pattern. Its median is 182 therms, which puts this model 9 therms below. Its rank is 1st lowest energy use of 397, in the lowest quarter of its class.

The high draw pattern describes a larger household, or one where showers and laundry overlap, so the 173 therms figure applies to that kind of use. Households with a different draw pattern should not read it as their own number. Energy use at other draw patterns is not available for this model on this page. The registry lists a maximum flow rate in gallons per minute of 4.3. That is a maximum, and this page does not state the flow available at a given incoming water temperature. To narrow options by fuel, space and size, use the water heater selector. To check against an existing unit, find a same-class replacement by model number.

The running cost is not stated in this text. It depends on the state average residential gas price where the reader lives, and this page does not estimate it. The cost calculator on your own ZIP applies that price to 173 therms and returns the result. The steps behind that calculation are described in how the annual cost is calculated. The 173 therms figure reflects the federal test's daily draw for the high draw pattern, not measured use in any one home, so a real bill can differ. The modeled installed-cost range appears in its own block on the page, with its source and date.