Midea MGWH150OSPN

The annual figure of 135 therms is computed by this site, not by the registry. It starts from the registry's UEF, the ratio of hot water delivered to energy used. This model's UEF is 0.82. The other input is the daily hot-water draw that DOE's test sets for the medium draw pattern. The natural gas figure applies only to that draw pattern. A household with a different daily draw would use a different amount, and that amount is not available here. Because the figure is modeled, it is not a metered reading from any home. The source is DOE CCD, retrieved 2026-09-19.

Against the class median of 135 therms, this unit differs by 0 therms. Its energy use is therefore equal to the median of the 80 models registered as a gas tankless unit at the medium draw pattern. It ranks 32nd lowest in energy use, which places it in the lower half of its class. This suits a reader confirming that a listed figure sits at the class norm. It does not show that the unit uses less energy than its peers, because the difference from the median is 0 therms. The maximum flow rate in gallons per minute is 3.8. That rating does not enter the annual energy figure, which is built from UEF and the daily draw.

Running cost is not stated here, because it depends on your state's average residential gas price. To check it, multiply 135 therms by your own rate, or use the cost calculator on your own ZIP. The method behind the annual cost is documented separately. The figure of 135 therms holds only at the medium draw pattern, so a different draw changes the result. To compare with a unit in the same class, find a same-class replacement by model number starting from MGWH150OSPN. The modeled installed-cost range appears in its own block with its source and date. It is a modeled range, not a quote, and this text does not restate it.