AUTOFAN Kit for Coleman RV Air Conditioner - No Heatstrip Not compatible with units which have optional heatstrip installed (use product 44160 instead). For Coleman Mach 48000 series RV air conditioners with 9000 series ceiling assembly. Fan only runs while cooling when kit auto-fan switch is set on, otherwise runs as factory Saves money on energy and cuts down on wind and noise. Easy to install. Completely reversible to factory condition. No cutting or drilling.