This motor was a simple and low cost method of repairing our exhaust fan. I bought the motor to replace one that was getting excessively noisy. When I installed the new motor, it functioned, but there was a vibration that was higher than what you would expect from an exhaust fan. I contact the company through email, and they helped me isolate the problem to the plastic fan assembly. Once that was replaced, the exhaust fan works better than it did when it was new!