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2.5 Condensor with a 5 ton coil
I was asked to try to salvage a central hvac job on a new construction summer home in upstate NY, The installer never heard of manual J, so he put in a 5 ton air handler and coil, I want to suggest that he only install a 2.5 ton condensor, That's all the house needs. I did review the duct design, and for this job it should work ok if I run the furnace on low speed 915 CFM @ .7 IWC from the manufactures data, never did anything like this before, What problems can I run in to doing this on the refrigeration side?