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Posted by HeatPro on January 24, 2005 at 18:08:54:
In Reply to: Re: Replacing boiler posted by Pat S on January 24, 2005 at 17:28:36:
If this is in a northern state I would be suspicious about that calculation. If it is in a warmer state with a 50 DTD, then you might have it right. Uninsulated old houses are usually in the range of 50 to 80 btuh per sq ft at 80DTD.