I had airdog replace one the other day. They said they had a run of bad motors for almost a year up until about 6 months ago. They said call them if you have one of the bad ones they have no issue replacing it. This is one of the reasons I like airdog a bit more is the less hassle with warranty issues. They also have a better mounting system location and hose / connections are better. I think I like the fass pumps a bit more but pros / cons with both of them.