Performed diagnostic on 5yr old carrier unit, upon arrival customer stated unit was leaking water, customer had me come to back door due to his wife upstairs working, found unit in basement, noticed unit doesn’t have a secondary drain pan, recommend adding secondary drain pan, found water all over basement floor, inspected evap coil, found primary pan full of water, recommend flushing and clearing drain line, found filters heavily impacted, found furnace with a big hole cut in the side with no return plenum, recommend adding return plenum and cutting a return duct to help with airflow, found blower wheel impacted, recommend chemical cleaning, , also recommend adding wet switch to prevent future water issues, inspected outdoor unit, found condenser coil impacted, recommend chemical cleaning condenser coil, checked pressures and temp split, went over options with customer, customer declined all recommendations due to he is using his warranty company, unit is working but still leaking wa