We just recently moved into a home that currently has the following model AC…Keeprite (we hope) Model NAC030AKA5. It seems to work fine but doesn’t seem to cool the house to the desired temp The house is about 1300 sq ft with a finished half basement. It is a split level with vaulted ceiling in living rm and dining room. Does anyone know the SEER rating on this model and the size (tonage). Any other owners info would be a great help too. Thanks in advance.