Used very little. Also has an artic pack so its great for cold climates. Has three slide outs. Power Jacks, Fireplace. Great condition. Has a clip on insulated cover for the bottom during the winter. Very nice unit. Husband lived in it in Colorado and Wyoming during the winter for 4 years and he kept warm and it worked well. He's been back home for a couple of years and we just don't have time to use it as we have a smaller one we use.