FYI: When I expand my greenhouse I plan on having a natural gas line run from the house. There are some very nice natural gas (and propane) greenhouse heaters available and the venting is pretty simple.
Unfortunately, like you, I can't have a 220 line run to the greenhouse and I'm tired of the circuit breaking with the two oil radiators. Besides, electrical heat is soooooooo expensive!
Hey, my friends in the Pacific Northwest - Stop it!
There is now a winter storm warning here, we're supposed to get about 9" (more) snow tonight
, and temps are supposed to drop to around 5(F)
. Please stop sending your storms down here.