I bought a brand new system for my Nutone central vacuum system. ct700 replaced what had been standing for 14 years. So far in less than two years I've replaced the powerhead and switch on the vacuum hose and am currently troubleshooting the system again. This stuff is poorly designed and manufactured and I would appreciate if another brand would work with my system. Shame as I love the central vacuum and the original system has worked flawlessly for 14 years. CT700 is garbage.