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Lochinvar FMDV-30 2**

Lochinvar FMDV-30 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-30 2**.

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

Lochinvar FMDV-30 2**: advertised and certified
Lochinvar 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 Lochinvar Read Oct 4, 2026
Size 29 gal 29 gal storage volume Lochinvar Read Oct 4, 2026
UEF 0.61 0.61 Lochinvar Read Oct 4, 2026
First-hour rating 60 gal 60 gal Lochinvar Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
MGN03030 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. Over one hour from a full tank, it gave 60 gallons in the test (its first-hour rating). 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. The median gas storage model gives 78 gallons in the first hour of the test.

As of Oct 26, 2026, it was not listed as ENERGY STAR certified. In tests, 61% of the energy it uses ends up as hot water (UEF 0.61). Its test ran at the medium level of daily hot water use. Its UEF is lower than that of 72 of the 288 gas storage models with its draw pattern. For its type and draw pattern, the median UEF is 0.60. The water took in 78% of the energy used to reheat it (its recovery efficiency).

There are 4 more basic models with the same test figures. They are listed under 4 other brands, one each. For the full group, see the A. O. Smith FMDV-30 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.