How many Tons needed for 1500 sq ft home?

Refrigeration Ton is depend upon 1) Outdoor environment condition 2) Area of exposed roof/walls/Windows/glass. 3) Non AC / AC partition wall/ glass/ below & above floor 4) orientation 5) Occupancy in that area 6) Equipement load generated heat & Light load. 7) No of air changes required. Generally for compfort air conditioning tonnage required is vary between 75 - 150 sqft per ton means your load will vary between 20 - 10 TR depending on above criteria.