GSW

A sub-brand of: A. O. Smith

Sister Brands

American

A. O. Smith

State

Envirosense

John Wood

Lochinvar

Reliance

Takagi

U.S. Craftmaster

Most Efficient Water Heater Systems by GSW

What?! That ain't the future.

Sadly, this brand isn't even manufacturing any Heat Pump Water Heaters as of yet, despite them being the most efficient option available and the one that will save you the most money , even in the short run in the long run. We recommend you browse our Big Table of heat pump water heaters for a better option.

SYSTEM TYPE	TANK SIZE	EFFICIENCY (UEF)	IDENTICAL TO (BRANDS & MODELS)
Gas Tankless	None gal	0.95	A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State , Takagi	View System
Gas Tankless	None gal	0.95	A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State , Takagi	View System
Gas Tankless	1 gal	0.95	A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State	View System
Gas Tankless	1 gal	0.95	A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State	View System
Gas Tankless	1 gal	0.95	A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State	View System
Gas Tankless	1 gal	0.95	A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State	View System
Gas Tankless	1 gal	0.95	A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State	View System
Gas Tankless	1 gal	0.95	A. O. Smith , American , GSW , John Wood , Lochinvar , Reliance , State	View System
Gas Storage	49 gal	0.88	A. O. Smith , American , GSW , Reliance , State	View System
Gas Storage	48 gal	0.88	A. O. Smith , American , GSW , Reliance , State	View System

Conventional Electric Ain't Efficient!

Guess what!? Conventional electric Water Heaters are not efficient enough for Energy Star to certify them, and these days, there's no reason not to get a heat pump water heater, so you won't find any here.

Heat Pump Review

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GSW

Sister Brands

Most Efficient Water Heater Systems by GSW

What?! That ain't the future.

Conventional Electric Ain't Efficient!

Heat Pump Review

This is an alert

GSW

Sister Brands

Most Efficient Water Heater Systems by GSW

What?! That ain't the future.

Conventional Electric Ain't Efficient!

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This is an alert