Hot Water List

State GPDX-75L 3**

  • Gas storage water heater
  • 4 listed models

This model is not in the current certification listing as of Oct 26, 2026. It was last listed on Oct 2, 2026.

Its figures are also listed under A. O. Smith GPDX-75L 3**.

Certified figures

Storage volume
72gallons
UEF
0.68Uniform energy factor
First-hour rating
129gallonsHot water in the first hour

Product history

State GPDX-75L 3** left the DOE listing between Oct 2, 2026 and Oct 17, 2026.

State GPDX-75L 3** was in the DOE listing by Oct 2, 2026.

Advertised and certified figures

State GPDX-75L 3**: advertised and certified
State GPDX-75L 3**: advertised and certified Size: advertised 75 gal, certified 72 gal (advertised nominal size, certified storage volume). Size: advertised 72 gal, certified 72 gal (certified storage volume). UEF: advertised 0.68, certified 0.68. First-hour rating: advertised 129 gal, certified 129 gal. Size · advertised nominal size, certified storage volume Advertised 75 gal Certified 72 gal Size · certified storage volume Advertised 72 gal Certified 72 gal UEF Advertised 0.68 Certified 0.68 First-hour rating Advertised 129 gal Certified 129 gal
State GPDX-75L 3**: advertised figures, where and when read
FigureAdvertisedCertifiedAdvertiserRead
Size 75 gal, nominal size 72 gal storage volume State Read Oct 5, 2026
Size 72 gal 72 gal storage volume State Read Oct 5, 2026
UEF 0.68 0.68 State Read Oct 5, 2026
First-hour rating 129 gal 129 gal State Read Oct 5, 2026

Certified figures by listed model

State GPDX-75L 3**: certified figures by listed model
Model numberStorage volume (gal)UEFFirst-hour rating (gal)Recovery efficiencyDraw pattern
GS6-75-HRPDTL 3*1720.6812972%—
GS6-75-YRPDTL 3**720.6812972%—
SDV-75-76NE 3**720.6812972%—
SDV-75-76PE 3*1720.6812972%—

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

It holds 72 gallons in the test, 3 gallons less than its 75-gallon sold size. Over one hour from a full tank, it gave 129 gallons in the test (its first-hour rating). Reheating lets it give 57 gallons beyond the 72 gallons in its tank.

In tests, 68% of the energy it uses ends up as hot water (UEF 0.68). When it reheats water in the test, 72% of the energy it uses ends up in the water.

It is sold under 4 model numbers in all. For the full group, see the A. O. Smith GPDX-75L 3** page.

Updated Oct 26, 2026 · Methodology

Not covered

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