Contractor installation

A. O. Smith ProLine® Water Heaters

With commercial-grade components and innovative designs, A. O. Smith ProLine®, ProLine® Master and ProLine® XE products are built specifically to meet all of your hot water needs.

A. O. Smith ProLine® Water Heaters

The A. O. Smith ProLine® family of water heaters offers a wide range of innovative solutions for your unique lifestyle needs. Discover which product line meets your needs below.

Benefits of A. O. Smith ProLine® Water Heaters

Efficiency & Reliability For Your Home

These residential products have been thoroughly tested in our labs to ensure that they last, and that means peace of mind for you and your family.

Extensive Selection of ProLine®Products

With hundreds of different products in our lineup, you’ll be sure to find the ideal water heater that will perform best based on how you and your family use hot water.

Industry-Leading Warranty

All A. O. Smith water heaters are backed by top-notch tank and parts warranties. Ask about our ProLine® Master products, which offer extended warranty protection.

Extra Tank Protection

A. O. Smith ProLine® water heaters are built with commercial-grade components for increased durability and reliability.

A. O. Smith ProLine® Electric Water Heaters

ProLine Electric Water Heaters offer a wide range of water heating solutions—from models that help you qualify for electric utility rebates to high recovery models ideal for large families with high demand for hot water.
Tankless Water Heater

ProLine® Electric Water Heaters

A. O. Smith ProLine electric water heaters are designed with the same blend of innovation and cutting-edge technology as our industry-leading commercial line.

Heat Pump

ProLine® Master Electric Water Heaters

Built with commercial-grade components, our ProLine® Master electric water heaters come with an 8-year warranty. With their impressive combination of innovation and durability, these models are designed to deliver years of reliable performance.

Cyclone XL

ProLine® XE Electric Water Heaters

ProLine® XE electric water heaters are an ideal choice for homeowners looking to get the highest efficiency out of their water heaters.

A. O. Smith ProLine® Gas Water Heaters

The A. O. Smith ProLine® line of gas water heaters offers a wide range of innovative water heaters that are designed for long-lasting performance. The A. O. Smith ProLine, ProLine Master and ProLine XE product families are designed to meet all of your hot water needs. As the leaders in commercial water heating, we’re thrilled to bring commercial grade products into your home. Your water heater is an investment in your home’s value and in your family’s comfort. Make the easy choice, a professionally installed A. O. Smith ProLine commercial-grade water heater, and get the most for your money.
Tankless Water Heater

ProLine® Gas Water Heaters

ProLine Gas Water Heaters offer a wide range of water heating solutions—from models that help you qualify for gas utility rebates to high recovery models ideal for large families with high demand for hot water. And, our specialty vent gas water heater options can be installed almost anywhere in your home because they can vent up to 40 feet. Our direct vent models feature two-pipe combustion systems that draw clean air from outside the home, eliminating any worries about indoor ventilation.

Heat Pump

ProLine® Master Gas Water Heaters

The ProLine Master Gas Water Heaters bring commercial-grade design into the residential setting, offering a wide range of water heating solutions for many different types of homes.


All A. O. Smith products use CoreGard™ stainless steel core anode rods, but the ProLine Master Series has increased anode protection with either larger or multiple anodes depending on model. Ultra Low NOx units are available where required.


Cyclone XL

ProLine® XE Gas Water Heaters

ProLine® XE gas water heaters are an ideal choice for homeowners looking to get the highest efficiency out of their water heaters.