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A. O. Smith FMDV-30 2**

A. O. Smith FMDV-30 2** is in the DOE listing as of Oct 26, 2026.

It has a labeled size of 30 gallons, a certified storage volume of 29 gallons, a certified UEF of 0.61, and a certified first-hour rating of 60 gallons of hot water.

Its advertised UEF of 0.61 from A. O. Smith matches the certified 0.61 (Read Oct 4, 2026).

  • Gas storage water heater
  • 2 listed models

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

Storage volume
29gallons
UEF
0.61Uniform energy factor
First-hour rating
60gallonsHot water in the first hour
See it among every gas storage model

Advertised and certified figures

A. O. Smith FMDV-30 2**: advertised and certified
A. O. Smith FMDV-30 2**: advertised and certified Size: advertised 30 gal, certified 29 gal (advertised nominal size, certified storage volume). Size: advertised 29 gal, certified 29 gal (certified storage volume). UEF: advertised 0.61, certified 0.61. First-hour rating: advertised 60 gal, certified 60 gal. Size · advertised nominal size, certified storage volume Advertised 30 gal Certified 29 gal Size · certified storage volume Advertised 29 gal Certified 29 gal UEF Advertised 0.61 Certified 0.61 First-hour rating Advertised 60 gal Certified 60 gal
FigureAdvertisedCertifiedAdvertiserRead
Size 30 gal, nominal size 29 gal storage volume A. O. Smith Read Oct 4, 2026
Size 29 gal 29 gal storage volume A. O. Smith Read Oct 4, 2026
UEF 0.61 0.61 A. O. Smith Read Oct 4, 2026
First-hour rating 60 gal 60 gal A. O. Smith Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
FMDV-30 2**290.616078%Medium
G6-DMH3030NV 2**290.616078%Medium

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

It holds 29 gallons in the test, 1 gallon less than its 30-gallon sold size. It delivers 60 gallons of hot water in the test's first hour. That is 31 gallons more than its tank holds, since it reheats during the hour. Among 763 gas storage models, 697 have a higher first-hour rating. Among gas storage models, the median first-hour rating is 78 gallons.

It was not listed as ENERGY STAR certified on Oct 26, 2026. In the test, 39% of its energy does not reach the hot water (UEF 0.61). Its test simulated a day of medium hot water use (its draw pattern). Of 288 gas storage models with the same draw pattern, 72 have a higher UEF and 200 a lower one. For its type and draw pattern, the UEF runs from 0.57 to 0.75. Of the energy spent to reheat water, 78% goes into it (its recovery efficiency).

It is the basic model for FMDV-30 2** and G6-DMH3030NV 2**. Its test figures match those of 4 other basic models. Each of them is listed under a different brand.

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.