I have owned Vacuflow vacuums in two different houses. Both units have been great. My current unit has a dual motor which makes suction a little stronger. I can't imagine not having a central vac now. The only problem that I have experienced was one of the motors going bad after about 8 years. I was able to buy a replacement motor from Grainger and install it myself in about an hour. Very easy. There isn't much more that could go wrong provinding everything is installed correctly, especially the routing of the pipes.