The main difference between commercial and residential systems is simply the sheer size of the systems. A commercial system is designed to serve significantly more people than a residential system. While your home may only have a few drains and toilets, your commercial property likely has stories of plumbing tied to a number of bathrooms, sewage lines and water heaters. As you can imagine, industrial grade equipment requires industrial grade tools to service commercial systems. In addition to different tools, different techniques and experiences are required to properly handle your commercial plumbing needs.