For this job, I worked on a super tune-up on this gas furnace system. I went through all the mechanical and electrical parts of a system and checked for maximum efficiency. Filter was replaced and outside condenser was completely washed. Adding on, customer was informed about the duct not being attached to his tap in his supply, due to the tap being in bad conditions. I recommended the possible solutions to the customer and customer approved for job to be done Monday from 3:00 to 5:00 p.m. Thank you for choosing Comfort Experts, have a great day!