Hot Water List

Midea D40-45FH

Midea D40-45FH is in the DOE listing as of Oct 19, 2026.

  • Electric storage water heater
  • 1 listed model

ENERGY STAR certification does not cover this type of water heater.

Its figures are also listed under A. O. Smith ENS-40 1**.

Certified figures

Storage volume
37gallons
UEF
0.92Uniform energy factor
First-hour rating
55gallonsHot water in the first hour

Certified figures by listed model

Midea D40-45FH: certified figures by listed model
Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
D40-45FH370.925598%Medium

UEF is the uniform energy factor. A dash means the model has no such figure.

It holds 37 gallons in the test, 3 gallons less than its 40-gallon sold size. Starting full, it gives 55 gallons of hot water in its first hour of use. Reheating lets it give 18 gallons beyond the 37 gallons in its tank. Of 477 electric storage models, 204 give more hot water in the first hour. The median electric storage model gives the same amount in its first hour.

In the test, 8% of its energy does not reach the hot water (UEF 0.92). The daily hot water use in the test, called its draw pattern, was medium. Of 297 electric storage models with the same draw pattern, 81 have a higher UEF and 2 a lower one. On its draw pattern, its UEF is also the median electric storage UEF. The water took in 98% of the energy used to reheat it (its recovery efficiency).

There are 14 more basic models with the same test figures. Besides this brand, 7 brands list one or more of them. You can find the whole group on the page for the A. O. Smith ENS-40 1**.

Also listed as

They carry every figure in the table above.

2 more basic models carry these figures.

Updated Oct 19, 2026 · Methodology

Not covered

  • Advertised figures. We have none on file for this model.