Water Heaters

Commercial Water Heater Sizing

Need commercial sizing help? A. O. Smith's Pro-Size Tool can recommend the right product for your commercial water heating needs.

Commercial Pro-Size Tool

Commercial Pro-Size Tool

Enter your facility water heating needs and we'll recommend a specific product to meet your requirements.

Commercial Technology Selector

Commercial Technology Selector (Under Construction)

Answer some questions about your commercial water heater needs and we'll recommend the best technology for your application.

Commercial Technology Selector

Potable Water / Hydronic Expansion Tank Sizing Calculator

Use this sizing tool to calculate the proper expansion tank to meet your requirements.

Need a custom commercial solution?

Contact a local A. O. Smith rep for additional help.

Why A. O. Smith?

Market Leader

A. O. Smith is a leading manufacturer of both residential and commercial water heating technologies, including the #1 most specified commercial water heater.

Commitment to Innovation

For more than 145 years, we’ve developed state-of-the art products that push new boundaries and improve the lives of our customers.

Best-In-Class Support

We combine cutting-edge technology with committed people who take pride in providing the very best support for our customers.

Unmatched Quality

Our products are put through rigorous quality and endurance testing so now matter where hot water is needed, A. O. Smith can provide a solution you can count on.

Learn more about A. O. Smith