Complete tune up special with new 16x25x1 filter. Check check drain, safety and operations. Find 15 year old cooling system operating with low charge, missing starter kit and very dirty coil. Find blower assembly very dirty and cover with dirt, find air distribution dirty and duct work dirty. System need duct cleaning, need to pull and clean blower assembly. Find system missing in line water protection. Give customer estimate to for repair, safety and ducts cleaning