ultra-low NOx

A. O. Smith 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. The easy-to-install Master-Fit series 200 includes two models: the 81-gallon BTL-198 at 65-inches Read more