A system for heating one or more components of a heat recovery steam generator that includes a heat-transferring conduit that fluidly connects a high-pressure section of a flow path to a low-pressure section of the flow path. The flow path is defined by a housing of the heat recovery steam generator and configured to direct a heat-containing medium. The heat-transferring conduit is configured to receive the heat-containing medium from the flow path such that the heat-containing medium flows through the heat-transferring conduit via a pressure differential between a first pressure of the heat-containing medium at the high-pressure section and a second pressure of the heat-containing medium at the low-pressure section. The heat-transferring conduit is further configured to heat the one or more components of the heat recovery steam generator via directing the heat-containing medium to be in heating contact with the one or more components.