Midea MGWH199ISPN

The figure of 206 therms was computed by this site, not by the registry. It combines the registry's UEF, the ratio of hot water delivered to energy used, which is 0.82 for this model, with the DOE test's daily hot-water draw for the high draw pattern. The fuel is natural gas. The source is the DOE CCD, retrieved 2026-09-19. The number therefore describes the federal test's daily draw, not a measured household. It is a modeled value, and actual use in a home will differ with the real amount of hot water drawn.

The high draw pattern describes a larger household, or one where showers and laundry overlap. The registry lists a maximum flow rate in gallons per minute of 4.9 for this model. The 182 therms class median comes from the 397 models registered as a gas tankless unit at the same draw pattern. This model sits 24 therms above that median, in the second-highest quarter of its class for energy use, at rank 229th lowest. Anyone comparing on energy use alone should read that position as it stands: models ranked ahead of it use less gas at this draw pattern. For a household with a lighter draw, this page gives no figure.

The running cost is not stated here because it depends on your state's average residential gas price. Enter your ZIP in the cost calculator to apply that price to 206 therms. The steps behind the calculation are in the methodology for annual cost. To check a like-for-like alternative, find a same-class replacement by model number and compare its energy use against the 182 therms median. The modeled installed-cost range appears in its own block on this page, with its source and date, and is not repeated in this text.