GSW WATER HEATERS HDHE-75 4**

GSW WATER HEATERS HDHE-75 4** is in the DOE listing as of Oct 26, 2026. GSW WATER HEATERS 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

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

GSW WATER HEATERS 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

GSW WATER HEATERS HDHE-75 4**: certified figures by listed model
Model number	Storage volume (gal)	UEF	First-hour rating (gal)	Recovery efficiency	Draw pattern
8G-75100PDV-H06 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

GSW WATER HEATERS HDHE-75 4**: ENERGY STAR certified models
Model number	Storage volume (gal)	UEF	First-hour rating (gal)	Recovery efficiency
8G-75100PDV-H06 4**	74	0.86	150	97%

It holds 74 gallons in the test, 1 gallon less than its 75-gallon sold size. Starting full, it gives 150 gallons of hot water in its first hour of use. Reheating lets it give 76 gallons beyond the 74 gallons in its tank. Of 763 gas storage models, 17 give more hot water in the first hour. The median gas storage model gives 78 gallons in the first hour of the test.

Its single model number, 8G-75100*PDV-H06* 4**, is ENERGY STAR certified. In tests, 86% of the energy it uses ends up as hot water (UEF 0.86). When it reheats water in the test, 97% of the energy it uses ends up in the water.

There are 4 more basic models with the same test figures. Each of the 4 other brands lists one of them. For the full group, see the A. O. Smith HDHE-75 4**.

In 3 states, 3 rebate programs may accept it. It may qualify for one more if it meets terms its figures do not show.

Also listed as

They carry every figure in the table above.

Rebates

GSW WATER HEATERS 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.