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Sizing replacement boiler
I am a homeowner, not a pro. Just read this post and got to thinking:
I am going to replace my natural gas fired steam boiler.
The projected heat loss of the house after insulation and windows is 27,780.
The current btu output of all the radiators is 36,000.
I have not calculated in any "pick up" percentage.
Currently no insulation on the pipes in the basement but I could add some easily.
What should my target boiler size be?
I am looking at the Burnham Independence models.
Should I go with the IN3 38,000 BTU or IN4 65,000 BTU?