My ranch is about 1800 square feet with the 3 season room, which is an add on. It is off the dining room. Large slider patio doors separate it from the dining room, so I have a pretty big opening when they are open. If I could maintain nice steady heat, I might even remove them. The 3 season room is at a 90 degree angle with the rest of the ranch. I am in the procces of gutting and renovating the 3 season, and have just about fully insulated it( still have to do under the floor, I think this room was originally a deck) and put up 1/2 inch sheetrock. I removed the old woodburner, a huge Huntsman model. So I already have a big hearthpad which is made of slate and is on a 7” platform, which I’d like to size down}. I’ll be carpeting the room when all else is done. Once again the 3 season room is 18x20. The living room is at one end and the 3 bedrooms are at the other end. There is a basemt with one more bedroom downstairs. I have forced hot air heating, with only one zone. I've finally decided that I'm buying a pacific energy stove. My final question is that would the way my house is layed out, would the small Visat Classic do the job of heating the 3 season, living and dining rooms? Its rated for 1500 square feet. Are these ratings realistic for New York? Thanks for your patience with me, I justw anna buy this once.