As of 2015, boiler manufacturers include Weil-McLain, U.S. Boiler Company and Indeck Power Equipment. Based in Michigan City, Indiana, Weil-McLain designs and manufactures oil-fired, gas steam and hot water boilers for space heating in institutional, residential and commercial buildings. U.S. Boiler Company of Lancaster, Pennsylvania, manufactures steam and water boilers, boiler control systems, home heating equipment, and hot water heaters. Indeck Power Equipment, a single-responsibility steam power resource, operates facilities in Wheeling, Illinois, Erie, Pennsylvania, and Quebec, Canada.
Weil-McLain produces a variety of energy-efficient boilers for residential heating, as well as oil-fired, gas-fired and combination oil/gas boilers for hotels, restaurants, gaming facilities and institutional facilities. Models include the Evergreen gas boiler, Ultra oil boiler and WTGO oil boiler.
U.S. Boiler is strictly a manufacturer of hydronic heating products that it sells to distributors. The distributors sell to dealers and contractors who install and service the boilers and full home heating systems that include valves, pipes, fittings, and the way the boiler introduces heat into the home. Products include the K2 boiler and its system enhancements.
Indeck Power Equipment offers a wide variety of boilers, including its ThermoFlo Watertube boiler, solid fuel boilers, waste heat recovery boilers and specialty boilers. The company specializes in meeting emergency needs. Indeck Power Equipment provides comprehensive services such as developing ideas, engineering products and installing equipment.