Arrived for ac check today. Started at furnace and checked static pressure, it is passing. Blower wheel is getting dirty. Motor amps are good. There is a 16 degree temp split, which is low. I changed both filters. The duct work is dirty also. At the condensing unit pressures and charge are low. That’s why the low 16 split. All the electrical components are running within manufacturing specs. Members got up to 1 lb free so I added to get charge correct. There is now a 19-20 degree temp split inside. System is running upon departure. Thanks for choosing LBA.