Yes they do. 20 years ago my furnace motor went out on a Sunday in a blizzard. I called 10 places and couldnt get anyone to come out. one place gave me a lead to a retired heating guy that was a hoarder. I called him and he said come over but dont come up the drive as it has 3 feet of snow and is 400 foot long. I said I had 4WD and a plow and he said come on down. He had my motor and traded me for clearing him a path out. 20 years later that motor is still running strong.