I used info online from mrhvac.com. It was pretty detailed, asked about sq ft of outside wall, and roof, type of doors and window as well as thier proximty to the sun. It came out just a hair under 100,000 required. What seems odd to me is that I am heating nearly 5,000 sq ft of home with alot of tall ceilings. My trophy room alone is 1,200 sq ft with 14' tall ceilings. There are other tall ceilings in the house as well. It is a newer home with proper insulation and I live in Winchester, VA, 2 hrs south of Harrisburg, pa. Does this sound light to you guys?
I currently am heated with 2 zones of heat pump with LP back up, I think each unit is a 2 1/2 ton unit.