Boilers are limited in the operational parameters for optimum performance by a large variety of factors. Heat exchangers are useful components to extend the application of a boiler system to a particular need. Powerhouse Heat Exchangers are designed to transfer the energy inherent in steam to a secondary fluid, typically water. While a specifically designed hot water boiler is limited on the input and output temperature differential a heat exchanger is capable of large temperature increases to a flow of fluid. Powerhouse Heat Exchangers are frame mounted for easy transport and quick site connection.