For this job, I worked on a double super tune-up on two heat pump systems. I went through all the mechanical and electrical components of the system and checked for maximum efficiency. Filters were replaced and outside condensers were washed. Adding on, UV bulbs were recommended to customer due to biological growth on both of his systems, picture was shown to customer. In addition, a micro airsoft start device was recommended for both units, I informed the customer about the benefits of this device, I explained the benefit of a soft start, low amperage, and longitivity. Customer will think about it and call the QR code that was given. Thank you for choosing Comfort experts, have a great day!