Upon arrival performed a two system unit inspection, checked all electrical, mechanical and safety components, checked amp draws, cleaned flame sensors, checked filters. Checked heat exchangers, and duct work both systems are operating properly at this time. I did find that the filters are needing to be changed. 1 20x25x4 and 1 16x25x4. As far as the line set insulation was able to just slide it up closer to the cabinet of evaporator coil.