1. Equipment Sizing Guide HAMILTON HOME PRODUCTS Use the map above to determine your region and compare to the chart below to find your application size 13 SEER Residential A C System Sizing Region 5 Residential Sizing The table and charts are intended to be used as a guideline for Residential applications only The information is based on conventional window space lt 15 insulation and building construction 8 ft ceiling height When including a finished basement use 1 2 of the finished basement square footage with the rest of the area being calculated O a O O LL dm o O V Mobile Manufactured Home Sizing Refer to the Date Plate located in the electrical box or kitchen cabinets For further assistance call Hamilton s customer service department 800 879 0123