OBTW, if it's tripped that many times, have someone kick on the air while you have a meter on the breaker to see what your statrt up 'draw' is on the switch, this will tell you if you're drawing too amperage on start up, then you;ll know if you have a problem. OBTW, I've seen units draw too much because they can't breathe', this can be a filter, or a dust heavy duct system.