Came out today to perform one system HVAC service call. Upon arrival, customer stated thermostat was not coming on. Upon inspection of the unit found that the thermostat had power going to it, but would not display anything which means thermostat had failed. Upon further inspection of the unit found the evaporator coil to be dirty and rusty, the blower wheel was dirty, the inducer motor was pulling max amps, the blower capacitor was bad. upon inspection of the outdoor system per customer request, found the system to be low on r22 refrigerant. Upon taking temperatures of the system, found that the system was overheating and on AC mode the system had a 3° split indicating low refrigerant. Customer elected to go with Band-Aid repair. Upon completion tested system to make sure of proper function. Upon speaking with customer before making repairs customer elected to have someone come give a quote for a new system for the upstairs portion of the home. At this time system is up and running se