Completed CCM form for 2 systems Main level system is now heating 90+ efficiency furnace condensate tubing had frozen. Now with warmer temperatures line have the thawed pump emptied itself and system is operating. Customer interested in maintenance contract for 2 systems. Downstairs filter size is 18 x 25 x 4 or 1 inch can be used. Upstairs filter size is 20 x 25 x 1. Performed heating maintenance on both the downstairs and upstairs furnace is including cleaning flame sensors inspecting filters inspecting electrical connections and components. Testing heat exchangers. Cleaning tubing on pressure switches. And treating condensate drain areas. The upstairs furnace is a 80% furnace and does not make water while heating. Both systems are operating properly at this time.