Answer: 2.53 ton Explanation: Most people are comfortable around 450600 square feet per ton. That's factoring in that it's well insulated and there other excessive heat factors. 
Kair 
Answer: 1.52.0 ton Explanation: You have to do a heat load to be 100% right if you are not measuring you are guessing. 
Arizona's Best Heating & AC, Inc. 
Answer: 2.53 ton Explanation: Normal guidelines would be 3 tons based on 500 sq feet per ton. Have the technician do a Manual J calculation is the only way to know the proper size. 
HVAC and More 

ProMatcher 
Answer: 2.53 ton Explanation: There are alot of different factors that play a role in sizing equipment. A load calculation on the home is the best way to find the proper size of equipment to best fit your homes needs. 
Dr Heat & Cool Comfort Experts 
Answer: 2.02.5 ton Explanation: Then you need to do a heat calculation to be sure. The R value of the windows, walls, floor and ceilings are very critical. 
Kohler Heating and Air Conditioning 
Answer: 3.03.5 ton Explanation: Well insulted does not give me a manual j load calculation to best decide what tonnage to install in this house, it also doesn't tell me what ductwork will handle, or what temperatures are at moderate 
Air Services Comfort Solutions LLC 

ProMatcher 
Answer: 3.03.5 ton Explanation: Climate and insulation are the key factors 
123HVAC of Long Island 
Answer: 3.54.0 ton Explanation: calculations of house reveals the size needed 
Climate Creations LLC 