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American FMDV-50 2**

American FMDV-50 2** is in the DOE listing as of Oct 26, 2026.

  • Gas storage water heater
  • 1 listed model

Not listed as ENERGY STAR certified on Oct 26, 2026.

Its figures are also listed under A. O. Smith FMDV-50 2**.

Storage volume
47gallons
UEF
0.57Uniform energy factor
First-hour rating
67gallonsHot water in the first hour
See it among every gas storage model

Advertised and certified figures

American FMDV-50 2**: advertised and certified
American FMDV-50 2**: advertised and certified Size: advertised 50 gal, certified 47 gal (advertised nominal size, certified storage volume). Size: advertised 47 gal, certified 47 gal (certified storage volume). UEF: advertised 0.57, certified 0.57. First-hour rating: advertised 67 gal, certified 67 gal. Size · advertised nominal size, certified storage volume Advertised 50 gal Certified 47 gal Size · certified storage volume Advertised 47 gal Certified 47 gal UEF Advertised 0.57 Certified 0.57 First-hour rating Advertised 67 gal Certified 67 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 50 gal, nominal size 47 gal storage volume American Read Oct 4, 2026
Size 47 gal 47 gal storage volume American Read Oct 4, 2026
UEF 0.57 0.57 American Read Oct 4, 2026
First-hour rating 67 gal 67 gal American Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
MHDV-62-50T40 2**470.576777%Medium

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

It holds 47 gallons in the test, 3 gallons less than its 50-gallon sold size. It delivers 67 gallons of hot water in the test's first hour. That is 20 gallons more than its tank holds, since it reheats during the hour. In the first hour, 552 of the 763 gas storage models give more hot water. Among gas storage models, the median first-hour rating is 78 gallons.

On Oct 26, 2026, this heater was not listed as ENERGY STAR certified. In tests, 57% of the energy it uses ends up as hot water (UEF 0.57). The daily hot water use in the test, called its draw pattern, was medium. Its UEF is lower than that of 277 of the 288 gas storage models with its draw pattern. For its type and draw pattern, the UEF runs from 0.57 to 0.75. When it reheats water in the test, 77% of the energy it uses ends up in the water.

All of its test figures are shared by 4 other basic models. Each of the 4 other brands lists one of them. For the full group, see the A. O. Smith FMDV-50 2** page.

Also listed as

They carry every figure in the table above.

Updated Oct 26, 2026 · Methodology

Not covered

  • Changes to an advertised figure after the date beside it.