Upon arrival customer stated that she was having issues with the ac unit, stated she had someone out to look at system and advised her of water issues where water was coming from condensate drain tube. Stated she just inherited home. After a full inspection of system found that unit is very low on refrigerant and is freezing so when system thaws out it’s filling the emergency drain pan. Upon entering area with customer showed her the water heater drain pan is full and water heater has been leaking. There is a lot of biological growth on the outside of system and on the walls in area. System was clean on the inside, system does not have a filter rack or filter inside, did not see a filter rack any where in home. Condensate pump is very old and line does have build up, poured water down drain and pump is working with no leaks going to outdoors. Checked outdoor system coils were clean, inside system is clean, all parts functioning properly. Refrigerant levels are very low. Gave customer e