For this job we performed a supertune up. All cooling and heating components were working within normal limits. Very large amount of biological growth growing inside the supply plenum. Homeowner was wanting to consider a coil cleaning. I spoke to homeowner about oins in doing a duct cleaning for bio growth and doing some complementary cleaning if they commit to the duct cleaning. I reccomended either a UV bulb replacement or a UV replacement. Homeowner is considering different options with financing and may call back if they make a decision on any work. Thank you for choosing comfort experts, have a great day!