Question: what is the difference between a 1 and 2 stage snow blower?
Answer: With single-stage models, the spinning auger cuts into the snow gathers it up and blows it out of the discharge chute. ... But with two-stage gas snow blowers, the auger that sucks up the snow does not contact the clearing surface, meaning you can do your snow blowing even on crushed stone or gravel driveways.