Best brands for full time and cold weather living

Check out the specs and options on each unit you are looking at getting. Look at things like "R" ratings of floor, roof, side walls and slider walls. Check out the options like heated holding tanks, heated underbelly and storage area. Make sure the unit is rated for zero degree weather. Zero degree weather is a option, meaning two extract model units one will be build for cold weather and the other will not be built for cold.