Since its really hot outside, I am starting to think about winter &
installing 1 of Karl's propex furnaces.  I see on his website, that
there are 2 models.  What's the opinion of this august group,
especially you Canuckians, on the proper size furnace?  Will the $700
model (6.5k btu)keep us nice & toasty, possible in the NE in mid
winter, or do I need the $900 (9k btu)model?

Tom B.-Wave 3000 didn't cut it at my coldest (28 degrees +-) campout
this year, January in Lake Havasu City, AZ.