For this job, I work on a super tune-up on this heat pump system. I went through all the mechanical and electrical parts of the system and checked for maximum efficiency. I mentioned to the customer at his coil and blower where really bad dust conditions and that he needed a full system clean which is the duct cleaning 2. Customer mentioned he didn't know when he was going to be able to do this and that the best thing to do was to send this information to his email. Thank you for choosing Comfort experts, have a great day!