A system comprising: a compressor including a compressor inlet and a compressor extraction outlet; an inlet system fluidly connected to the compressor, the inlet system including: a plenum including a first end portion that extends to a second end portion through an intermediate portion; the first end portion is orientated in a direction substantially parallel to a centerline of the compressor and defines an inlet for receiving ambient air; and the second end portion is orientated in a direction substantially perpendicular to the centerline of the compressor and defines an outlet that directs the ambient air towards the compressor inlet; and a silencer fluidly connected within the inlet system and orientated such that an upstream portion faces the first end portion and a downstream portion faces the second end portion; and a heating system including two conduits (100,105) located within the second end portion and adjacent to the silencer, wherein the two conduits (100,105) extend horizontally through the second end portion and are arranged in a substantially horizontal relationship, each conduit (100,105) includes a first end section, a second end section and an intermediate section, at least one of the first and second end sections is fluidly connected to the compressor extraction outlet, wherein heated air from the compressor extraction outlet passes through the two conduits (100,105) and raises a temperature of ambient air passing through the plenum and then into the compressor inlet, wherein each of the two conduits (100,105) includes a plurality of outlet openings through which the heated air from the compressor extraction outlet flows into the plenum, and wherein each of the two conduits (100,105) includes a leg portion that extends throughout the horizontal plane of the plenum. a compressor including a compressor inlet and a compressor extraction outlet; an inlet system fluidly connected to the compressor, the inlet system including: a plenum including a first end portion that extends to a second end portion through an intermediate portion; the first end portion is orientated in a direction substantially parallel to a centerline of the compressor and defines an inlet for receiving ambient air; and the second end portion is orientated in a direction substantially perpendicular to the centerline of the compressor and defines an outlet that directs the ambient air towards the compressor inlet; and a silencer fluidly connected within the inlet system and orientated such that an upstream portion faces the first end portion and a downstream portion faces the second end portion; and a heating system including two conduits (100,105) located within the second end portion and adjacent to the silencer, wherein the two conduits (100,105) extend horizontally through the second end portion and are arranged in a substantially horizontal relationship, each conduit (100,105) includes a first end section, a second end section and an intermediate section, at least one of the first and second end sections is fluidly connected to the compressor extraction outlet, wherein heated air from the compressor extraction outlet passes through the two conduits (100,105) and raises a temperature of ambient air passing through the plenum and then into the compressor inlet, a plenum including a first end portion that extends to a second end portion through an intermediate portion; the first end portion is orientated in a direction substantially parallel to a centerline of the compressor and defines an inlet for receiving ambient air; and the second end portion is orientated in a direction substantially perpendicular to the centerline of the compressor and defines an outlet that directs the ambient air towards the compressor inlet; and a silencer fluidly connected within the inlet system and orientated such that an upstream portion faces the first end portion and a downstream portion faces the second end portion; and a heating system including two conduits (100,105) located within the second end portion and adjacent to the silencer, wherein the two conduits (100,105) extend horizontally through the second end portion and are arranged in a substantially horizontal relationship, each conduit (100,105) includes a first end section, a second end section and an intermediate section, at least one of the first and second end sections is fluidly connected to the compressor extraction outlet, wherein heated air from the compressor extraction outlet passes through the two conduits (100,105) and raises a temperature of ambient air passing through the plenum and then into the compressor inlet,