Placement of air handler
I am planning to build a 950sq ft guest house. A basic layout one bed room, living room with open kitchen area and a bath area. Hurrican rated windows Dade County. I live in south Florida and the unit being considered is not a heat pump but a traditional A/C unit about 2 to 2.5 tons with a variable speed fan.The condensor will be on a slab outside the house. I am trying to save space by placing the airhandler in the attic. The roof and attic area will be insulated with Icenyne (Zip Foam). I was informed that moving the airhandler into the attic where heat will be a greater problem, a higher seer rated unit is needed and the cost of placing the whole HVAC unit would increase by about 1/3. Does this seem reasonable?