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Lochinvar FMHR-30 4**

Lochinvar FMHR-30 4** 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 FMHR-30 4**.

Storage volume
29gallons
UEF
0.60Uniform energy factor
First-hour rating
63gallonsHot water in the first hour
See it among every gas storage model

Advertised and certified figures

Lochinvar FMHR-30 4**: advertised and certified
Lochinvar FMHR-30 4**: 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 0.60, certified 0.60. First-hour rating: advertised 63 gal, certified 63 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 0.60 Certified 0.60 First-hour rating Advertised 63 gal Certified 63 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 0.60 0.60 Lochinvar Read Oct 4, 2026
First-hour rating 63 gal 63 gal Lochinvar Read Oct 4, 2026

Certified figures by listed model

Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
MFN030 35 4**290.606379%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. Starting full, it gives 63 gallons of hot water in its first hour of use. Its tank holds 29 gallons, so reheating adds 34 gallons during the first hour. In the first hour, 655 of the 763 gas storage models give more hot water. The median gas storage model gives 78 gallons in its first hour.

On Oct 26, 2026, this heater was not listed as ENERGY STAR certified. In the test, 40% of its energy does not reach the hot water (UEF 0.60). In the test, daily hot water use was set to medium (its draw pattern). Of 288 gas storage models with the same draw pattern, 88 have a higher UEF. For its type and draw pattern, its UEF sits at the median. Of the energy spent to reheat water, 79% goes into it (its recovery efficiency).

Its test figures match those of 5 other basic models. Each of them is listed under a different brand. For the full group, see the A. O. Smith FMHR-30 4**.

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.