12-01-2007, 12:02 PM
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Senior Member
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Join Date: May 2005
Location: Southeastern PA
Posts: 2,657
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I did a quickie calculation using my Heater Sizing Calculator using 600 square feet of surface area, a 0° minimum outdoor temp and a 50° desired minimum interior temp, and came up with 19,000 BTU's needed. At that, it seems that a Souther Burner heater is probably a good idea.
I would definitely opt for a vented- versus a non-vented heater.
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