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Old 03-19-13, 07:57 AM   #8
AC_Hacker
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Quote:
Originally Posted by Drake View Post
In a well insulated/sealed home actual heat demand is not easy to pre-calculate because of how much lifestyle secondary heating can affect things.
There is the Passive House Planning Package, which is a worksheet with built in formulas to pre-calculate.

For what it does, it is pretty cheap, but the learning curve is steep.

-AC
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