Hot Water List

American MHE6-40RW-035D-1**

American MHE6-40RW-035D-1** is in the DOE listing as of Oct 19, 2026.

  • Electric storage water heater
  • 4 listed models

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

Its figures are also listed under A. O. Smith MHE6-40RW-035D-1**.

Certified figures

Storage volume
36gallons
UEF
0.91Uniform energy factor
First-hour rating
40gallonsHot water in the first hour

Advertised and certified figures

American MHE6-40RW-035D-1**: advertised and certified
American MHE6-40RW-035D-1**: advertised and certified Size: advertised 40 gal, certified 36 gal (advertised nominal size, certified storage volume). Size: advertised 36 gal, certified 36 gal (certified storage volume). UEF: advertised 0.91, certified 0.91. First-hour rating: advertised 40 gal, certified 40 gal. Size · advertised nominal size, certified storage volume Advertised 40 gal Certified 36 gal Size · certified storage volume Advertised 36 gal Certified 36 gal UEF Advertised 0.91 Certified 0.91 First-hour rating Advertised 40 gal Certified 40 gal
American MHE6-40RW-035D-1**: advertised figures, where and when read
FigureAdvertisedCertifiedAdvertiserRead
Size 40 gal, nominal size 36 gal storage volume American Read Oct 5, 2026
Size 36 gal 36 gal storage volume American Read Oct 5, 2026
UEF 0.91 0.91 American Read Oct 5, 2026
First-hour rating 40 gal 40 gal American Read Oct 5, 2026

Certified figures by listed model

American MHE6-40RW-035D-1**: certified figures by listed model
Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
EMH6-40RW-030D-1**360.914098%Low
EMH6-40RW-035D-1**360.914098%Low
MHNE3F40RDW-1**360.914098%Low
MHNE3F40RSW-1**360.914098%Low

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

It holds 36 gallons in the test, 4 gallons less than its 40-gallon sold size. It delivers 40 gallons of hot water in the test's first hour. Its tank holds 36 gallons, so reheating adds 4 gallons during the first hour. Among 477 electric storage models, 444 have a higher first-hour rating. The median electric storage model gives 55 gallons in its first hour.

In tests, 91% of the energy it uses ends up as hot water (UEF 0.91). Its test ran at the low level of daily hot water use. Of 157 electric storage models with the same draw pattern, 81 have a higher UEF and 42 a lower one. For its type and draw pattern, the median UEF is 0.92. Of the energy spent to reheat water, 98% goes into it (its recovery efficiency).

It is sold under 4 model numbers in all. Its test figures match those of 3 other basic models. The A. O. Smith, RELIANCE WATER HEATERS, and State brands list one or more of them. You can find the whole group on the page for the A. O. Smith MHE6-40RW-035D-1**.

Also listed as

They carry every figure in the table above.

Updated Oct 19, 2026 · Methodology

Not covered

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