The IBC Technologies P-081294 HTC Heat Exchanger is a replacement component designed to facilitate efficient heat transfer in compatible IBC Technologies heating systems. It works by transferring thermal energy from the combustion process to the circulating heating water, helping deliver consistent heat throughout the system. This heat exchanger is used in compatible IBC Technologies ... https://www.partshnc.com/ibc-technologies-p-081294-htc-heat-exchanger