Harsco Industrial Patterson-Kelley manufactures and sells a full-line of condensing and non-condensing boilers. In addition to boilers, they also manufacture and sell instantaneous and semi-instantaneous water heaters. They offer an array of commercial boiler and water heating products including gas fired, dual fuel and outdoor boilers. With over 135 years of experience and an innovative R&D pipeline, they continue to present value-added heating solutions to the HVAC marketplace. In fact, their heat transfer equipment comes highly recommended by expert architects, engineers and contractors. Also, P-K products possess a wide range of installations in schools, colleges and universities, office buildings, hospitals and many other facilities.