We have an A/C (and heat) unit in the attic with force air ducts going to the ceilings in the rooms. I was in the attic today when the A/C turned on. I felt cold air come on my leg when I was near the unit. I looked carefully to see that air is leaking near the copper tubes coming out of the unit near the evaporator area.
I took pictures and marked the area where cold air seemed to be coming out in red. Is that normal? Should I somehow seal it with perhaps rubber seals sold in the market or improvise something?