The new Series GM cast iron, hot water boiler is designed for both commercial and residential applications, says the company. This natural gas atmospheric boiler is designed for use with a conventional chimney for simple installations, it says. Available in four sizes, the GM boiler features front-mounted controls in the boiler vestibule for safe operation and easy servicing. Boilers are available with 30, 50, 80, or 100 psi safety relief valves, and are packaged and designed with the return piping located in the front and the supply piping at the top/front of the boiler. The compact footprint gives the boiler flexibility in any single, modular, or multiple boiler installation, it says. — Peerless Heater Co. Boyertown, PA