Performed diagnostic on upstairs 6yr old Lennox heat pump, upon arrival customer stated unit had water in the pan and he can see water dripping from the side of the unit, checked tstat, already in ac mode set at 77 reading 77, upon going in attic found secondary drain pan with water, recommended removing all water from pan, customer declined stated he will remove it himself, also recommend TE flood protection such as wet switch to prevent pan from filling with water, customer declined as well due to having a float switch, I did explain that float switch will not activate until pan is full of water, inspected air handler, found primary pan full of water, recommend cleaning and flushing drain line, customer approved, flushed and cleaned drain line, now draining properly,inspected duct work and airflow, explain to customer he is short on suppply air for a 3ton unit, requires 1200cfm, customer only has 780cfm supply and 1120cfm in return, recommend increasing 10” to a 14”, customer decline