Performed heating maintenance on one heat pump system. Checked all electrical, mechanical and performance of the system. Cleared and treated the drain line and washed the outdoor coil. No major issues were found. See attached checklist for full tune-up details. I offered nice to have items to the customer and he chose to have a surge protection device added to the air handler and condenser unit at this time. I installed both surge protectors and cycled power. Everything is working at this time.