This system was about 5 years old, so there shouldn't be any risk of a line set leak for 20-25 years. If they need to access them for change out you could uncovered them with a jab saw or box cutter in about 10 minutes. In the interim they operate more efficiently then they previously were.
Did you really spray over the lineset? How is it accessible now for service? If there's a lineset leak, you're fucked.
This system was about 5 years old, so there shouldn't be any risk of a line set leak for 20-25 years. If they need to access them for change out you could uncovered them with a jab saw or box cutter in about 10 minutes. In the interim they operate more efficiently then they previously were.