This company was very helpful once i lied a little. I needed a new controller for older Comet II with hard wired motor. They wanted to sell new motor as well which is unnecessary for some people... like me. I was a Industrial Electrician for General Motors for 30 years. Rewiring this little simple motor was well within my expertise. I didn't want to argue with Nova about my ability to rewire motor, so I lied a little. But having saiying that I understand they did not want to send controller to someone who could not make it work. I would definitely reccomend this company and would do business with tham again..