Greetings, I have some questions concerning sizing of two separate residential split systems in the same house. I have a job that is 2/3s complete and just needed some professional advice about sizing. Both systems R-22 3000 sq ft house two separate split systems, natural gas 90afue furnaces with straight cool, all brand new. It seems most of the hard work is done but owner had to pull contractor off for financial reasons. Now trying to sell house. Anyway first system has 3 ton blower , 4 ton indoor coil . Second system has 4 ton blower and 5 ton coil. Not sure what size condensing units to install or what the contractor had in mind when he oversized the indoor coils. Also wondering about piston size, do I size to indoor coil or outdoor unit? Thanks in advance.