Technical support and customer service was top notch when my unit had stopped working. It had ran seamlessly for 2 years and then after I had my tank cleaned, it had stopped working. After calling to ask what the possibility could have been, I found out that the back pressure with the unit probably caused my issue due to the tank having less black water in the tank, causing the pump to work extra hard wearing the diaphragm out. I ordered the rebuild kit and installed. Once I had it rebuilt and reset the safety switch, it is back running like the day I bought it. The guys from support both helped me troubleshoot the unit and made purchasing the rebuild kit very easy. I give these fine folks a A++ in what a company and product should be.