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I am converting to gas heat from oil. Two story stone house, outside Philadelphia PA, is 85 years old, 1,600 square feet.
Two estimates s far, both through the flu venting. One is for a 96,000 BTU Burnham gas boiler. The second is for 132,000 Buderus boiler.
Why the large disparity in recommended BTUs?
Thanks in advance for your help.