No cool call. System is 6yo When arrive notices that ac fan was not running and there was a buzzing noice, electrical component were also corroded, blower wheel have been over working due to extreme amount of dust and debris. Also found sing of biological growth in system. Let costumer know about this issues and presented options. Costumer decided to move forward with repairs. Work was done and tested. System is now working properly. Thank for choosing TE Certfied!