After dealing with some electrical issues, we found that the motor on our 1.5 HP Hayward pump was burnt out. Some made the suggestion to try to replace the motor. I'm not sure exactly what model it is other than it being a super pump, I'm not sure when it came out. Anyway it was a single speed pump and I would rather upgrade to at least a two speed pump. We have a sand filter in our pool is 20 x 40. Variable speed is not really in my budget. Our local pool store only has a single speed available at this time. What are your suggestions for the best dual speed pumps and where to find them online?