State HDHE-75 4**

State HDHE-75 4** is in the DOE listing as of Oct 26, 2026. State HDHE-75 4** is in the ENERGY STAR list as of Oct 26, 2026.

Gas storage water heater
1 listed model

Its figures are also listed under A. O. Smith HDHE-75 4**.

Storage volume: 74gallons
UEF: 0.86Uniform energy factor
First-hour rating: 150gallonsHot water in the first hour

Product history

State HDHE-75 4** was in the DOE listing by Oct 2, 2026.

State HDHE-75 4** has a recorded ENERGY STAR market-availability date of Aug 15, 2025. It first appeared in the ENERGY STAR list between October 2025 and February 2026.

Certified figures by listed model

State HDHE-75 4**: certified figures by listed model
Model number	Storage volume (gal)	UEF	First-hour rating (gal)	Recovery efficiency	Draw pattern
GP-8-75-TPDT 4*	74	0.86	150	97%	—

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

ENERGY STAR certified models

State HDHE-75 4**: ENERGY STAR certified models
Model number	Storage volume (gal)	UEF	First-hour rating (gal)	Recovery efficiency
GP-8-75-TPDT 4*	74	0.86	150	97%

It holds 74 gallons in the test, 1 gallon less than its 75-gallon sold size. It delivers 150 gallons of hot water in the test's first hour. Its tank holds 74 gallons, so reheating adds 76 gallons during the first hour. In the first hour, 17 of the 763 gas storage models give more hot water. The median gas storage model gives 78 gallons in the first hour of the test.

Its single model number, GP-8-75-*TPDT 4**, is ENERGY STAR certified. In tests, 86% of the energy went to hot water, so its UEF is 0.86. When it reheats water in the test, 97% of the energy it uses ends up in the water.

Its test figures match those of 4 other basic models. Each of them is listed under a different brand. For the full group, see the A. O. Smith HDHE-75 4** page.

In 3 states, 3 rebate programs may accept it. Another one program may accept it if it meets their other terms.

Also listed as

They carry every figure in the table above.

Rebates

State HDHE-75 4**: rebate programs
Program	State	Status	Program page
Colorado Springs Utilities Water heater rebate (gas storage, gas tankless)	CO	May qualify	Its own page
Nicor Gas Energy Efficiency Rebates for Your Home (gas storage)	IL	May qualify if it meets the other terms	Its own page
DTE Energy Water Heaters (gas storage, gas tankless)	MI	May qualify	Its own page
Avista Home and small commercial: HVAC and water heating incentives (gas storage)	WA	May qualify	Its own page

Programs change their terms. Check the program's own page before you buy.

Updated Oct 26, 2026 · Methodology

Not covered

Advertised figures. We have none on file for this model.