AC Maintenance PCSA 2023 AC Check Up Renewal. Both systems are running at this time, coils are clean and all electrical components check out good. The upstairs system is very aged, however, it is cooling well. Customer mentioned that they are having trouble with humidity/cooling an addition of their house. I I inspected the duct work and found that whoever ran the duct for this part of the branched it off of the supply trunk line to this area. Leaving slack and then branching one of the supply runs off of another supply run. This pushes very little air. The crawl space under the addition is also very wet. It is well insulated, but the insulation is starting to become damp. There is also no place to add a small return in the addition. I suggested pricing an encapsulation.