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Buderus Model Differences
I am considering a Buderus boiler, but I am confused as to which model I should get since I have received two different estimates which suggest different models. Each installer came out to my home in NH and one suggested G 115-4 & the other suggested a G 215-3. I have oil heat and it will be a chimney vent. My house is a 1872 square feet garrison with 3 doors, 17 windows. Windows & vinyl siding are 5 years old, house is 27 years old. The basement is walk out with a 2 car garage under. I understand that it depends on BTU's but how much do I need. I know too much is not good. How do I figure what is right.