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Old 11-23-2015, 08:02 PM   #18
psneeld's Avatar
City: AICW
Country: USA
Vessel Name: Freedom
Vessel Model: Albin 40
Join Date: Oct 2011
Posts: 20,332
The typical electric space heater is 5000btu on high.

The typical 35 to 40 footer needs 2 or 3 heaters to warm the cabin to 70 degrees when the outside temps are in the 40 degree range and a bit of wind.
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