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Posted by HeatPro on August 15, 2005 at 15:22:50:
In Reply to: Re: Replacement Gas Boiler Size posted by John on August 15, 2005 at 15:17:42:
The instruction on matching a boiler to the baseboard is to take the heat estimate and select a boiler with an IBR rating that equals or is close but exceeds the estimate. Yes, the smaller one would be better. As the heat loss of a new 12 x 12 addition would be less than 3000 btuh as you have to use the latest insulation standards which prevent more heat loss, that smaller one should be OK.
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