About Us


Founded in 1977 by Larry Knorr, today Knorr Systems, Inc. (KSI) is considered an American small business success story.


Throughout the close of the '70's and into the decade of the '80's, KSI literally brought chemical automation to the commercial pool market throughout the West, and to date has sold and installed thousands upon thousands of systems. During this same time period, KSI expanded our equipment offerings to include everything it takes to operate a commercial / public pool; on the deck, in the equipment room, chemicals, everything but the water.


These days no one ever thinks what goes on behind those pool equipment room doors! But we care and always have! We are the people behind those doors providing the equipment and services to make it all work.We accomplish this with a nuts & bolts dedication to our customers; providing on-site, hands -on service via our Certified Technicians rolling their service trucks throughout the states we serve.



In 2012, we expanded our reach further by acquiring a successful Texas aquatic equipment supply and service organization and have now opened our doors in the Texas / Oklahoma / South Central region.


The KSI team of 60+ employees is spearheaded by the knowledge and talents of it’s President, Rich Robert. A native Iowan, Rich is a graduate of the University of Northern Iowa (1985), with a B.A. in Industrial Technology/Design. Immediately after graduation, Rich relocated to Southern California, where he joined the KSI team in 1986. Since that time, Rich has collaborated closely with the company's founder, Larry Knorr and has held positions in technical service and field sales before becoming President.


Dependent upon the scope of the project, KSI can provide training, operation maintenance, equipment sales or a complete turn-key project.


We invite you to join the KSI family….. "Do it Once, Do it Right, Do it the Knorr Way!"


knorrsystems.com is changing to Aquafinity.com

We're thrilled to announce that knorrsystems.com is now transitioning to Aquafinity.com! This transformation isn't just a new name; it signifies a new partnership, and an upgraded experience with improved information and an updated web store. Aquafinity is your complete source for water quality solutions, offering an expanded array of products and services. From state-of-the-art filtration systems to eco-conscious water treatment, Aquafinity is dedicated to delivering top-tier products and backed by expert on-site services. What's more, all existing logins and user accounts will seamlessly transition to the new site, ensuring a smooth experience for our valued customers. Join us as we take Complete Water Control to a new level at Aquafinity.com!