Complete 2 tune up inspection. Find gas furnace 23 year old operating with worn blower motor, worn damage ignition and poor filter system. Find system missing inline water protection for system in attic. Find 23 year old ac unit operating with pitted/ burnt contactor, low charge and worn stress compressor. Leaking hard start kit. Give customer estimate to repair, due to system age is it better for customer to upgrade system. Customer need estimate to upgrade system.