Upon arrival I began the AC tune up on the main floor system which is located in the basement. The temperature split was good at 18 degrees. The static pressure was at .7 out of a max of .8. The filter was a 3M filter and those are very restrictive. I replaced filters in both systems. The static pressure test is now passing for the main unit. The outdoor AC is from 2001 and it’s on its last leg. The compressor is amping high at 11amps. I don’t think it will make it through this summer. Everything else checked out. Secondly, I started the tune up on the system in the attic. The temp split was at 19 degree which is good. The static pressure upstairs is failing badly currently. I had field supervisor Scott out to work on the static pressure solution and to get them a quote for a new AC to the main floor unit. The refrigerant pressures on the upstairs unit were a little low but I believe this was due to the house being down to 62 degree and not having any type of heat load on the system. I