Service - K-O Concepts, Inc. Service K-O Concepts recirculating water chillers are built rugged. Our chillers are designed for reliability, easy maintenance, and worry free... operation. However; water chillers built to strict standards and quality occasionally require maintenance. K-O Concepts has a variety of support options: Phone: 9:00AM - 5PM EST 5 days... is completed within 2 days of receipt of the unit. To return a product to K-O Concepts, please have the following information available prior to contacting us. Your Company Name Billing...