Management

A. O. Smith
The A.O. Smith BTH-400 Cyclone® FLEX™ (part of the 400100G/100381400 series) is a 119-gallon, high-efficiency condensing commercial gas water heater delivering up to 95% thermal efficiency and 399,900 BTU/h.
Our Q&A with Ryan Atkins, Product Manager – Commercial Gas for A. O. Smith, answers some of the key questions.
May 13, 2026