For this heating tune-up I inspected the customer's air handler and condenser. This system is from 2004, straight electric, and utilizes R-22 refrigerant for cooling. Testing the heat strips, only 3 of the 4 were working and pulling the needed 20 amps. I leak searched the evaporator coil and was getting some hits on my detector indicating there is a very small refrigerant leak. Additionally the blower is loose and noisy on startup which is indicative of potential failure. The customer needs a compressor saver on the condenser and for the contactor to be replaced since it is pitted and buzzing which also points to potential failure. Overall the system is working however would need major repairs in the future and small repairs needed now to keep it functioning properly and close to manufacturer specifications. I recommend replacing the entire system with a new energy efficient heat pump and the customer would like to get a quote from a comfort advisor. An appointment is scheduled for tom