A motive air conditioning system for a gas turbine assembly is provided. The motive air conditioning system may include an inlet flow channel configured to be fluidly coupled with the gas turbine assembly. The motive air conditioning system may also include a filtration assembly fluidly coupled with the inlet flow channel and configured to filter motive air. The filtration assembly may include a plurality of filter modules disposed adjacent one another and further disposed circumferentially about a longitudinal axis of the inlet flow channel.