Freon Leak, Replace Coil?
I have 15 year old Rheem Ac . Freon was added in May and was advised had leaks in coil..cooled until last week. Had different repairman come so i could get another opinion..he had a tester for freon leak..a blue bulb looking thing with a long black neck, carried it around inside and said did not find inside freon so leak must be at unit outside. He replaced some little caps outside and added freon. This is my upstairs ac, four days later it is again 96 degrees in my upstairs and blowing hot air.
Repairman returned today with tester and now says I have leak in coil. Tester was making noise as he walked around inside house. I do not have quote for replacing coil yet. This is the first problem with this unit.
Should a coil replacement get me a few more years out of a system that doesn't seem to have any other problems???