Ben I'm not sure if Duo-Therm supplies these as standard or if they are an extra cost add on. You will need to check this further. BTW, don't forget to check the circuit that the A/C will run on. I think the 15K BTU unit uses about 18.5 amps under full load. Regards, Jack Canavera STL. Mo. '04 Classic S.O. 30' WBCCI 5024