We have a seasonal camp and are looking for a heat source (it is currently unheated & we want to extend the time we can use the camp). We are considering either a ductless heat pump or a pellet stove. It is about 800 square feet of space, with most of the space in the great room. Which system will be able to heat the camp quickly when we are there and when temperatures are below freezing outdoors (and probably indoors)? We would not keep the camp heated, just heat it up when we are there. Recommendations? Will a pellet stove be able to operate in those temperatures? Thanks for your input!