Gas turbine inlet heating system

A gas turbine inlet heating system (2) is disclosed. In one embodiment, the system (2) includes: a compressor (4) including: an inlet bellmouth (6) adjacent to a set of inlet guide vanes (IGVs) (8); and an outlet (10) fluidly connected to the inlet bellmouth (6); and a conduit (14) coupled to an outlet (10) of the compressor (4), the conduit (14) including a control valve (16), the conduit (14) for diverting a first portion of compressed air from the outlet (10) of the compressor to the inlet bellmouth (6).