Master-Fit® Gas Water Heaters for Small Spaces | A. O. Smith

April 15, 2014

A. O. Smith, ( the leading innovator in water heater technology, (, has introduced a commercial water heater that combines compact, easy-to-install size with low nitrous oxide emission technology. The Master-Fit ultra-low NOx gas water heater, for sale only in California markets, is the shortest commercial water heater in its class.

“With the shortest design on the market, multiple water connections and ultra-low NOx construction, the Master-Fit gas water heater was developed to deliver top-performance in demanding commercial gas applications while focusing on simple installation, especially where height is restricted,” said David Chisolm, vice president of marketing. “Innovative engineering also increased the accuracy and dependability of the control system, reduced excess heat from the burner, and improved the unit’s overall reliability and longevity.”

The easy-to-install Master-Fit series 200 includes two models: the 81-gallon BTL-198 at 65-inches tall and the 100-gallon BTL-199 at 73 inches tall. The series features ultra-low NOx assembly to keep business owners from worrying about emissions rules and multiple components designed to keep costs low.

About A. O. Smith:

A. O. Smith Corporation, which is celebrating its 140th anniversary this year, is a leading global manufacturer and marketer of residential and commercial water heaters. A. O. Smith offers its customers an additional competitive advantage in that the company designs, builds, distributes and field supports the world’s broadest and deepest line of residential and commercial water heaters, as well as commercial boilers. This single-source concept simplifies ordering, installation and service and is backed by more than 70 years of research and innovation. For more information, visit For the most up-to-date industry news, like us on Facebook and follow us on Twitter.

Perfect Fit A O Smith Introduces Master-Fit Ultra-Low NOx Commercial Gas Water Heater for Replacing Units in Small Spaces (PDF)