Winter outside heater recommendations?

[spectrrr]

Originally Posted by bobarian

Basically two options. Electric or propane. Both have their disadvantages, with electric, your meter will spin because anything that gives decent heat will use 1500w or more. Propane needs some ventilation to avoid carbon monoxide poisoning.

Adam posted these propane heaters that are a good deal. http://www.cigarasylum.com/vb/showthread.php?t=51402

Thanks for the link! tempting....

BIIIIIG Question - HOW MUCH ventilation is needed?
I CAN crack a window.... but erm, doesn't that defeat the purpose, requiring you to run a much higher output heater, and thus, NOT saving any of your money?