This Heater Manifold is manufactured for Hercules by Caldesso. It is known that we are a manufacturer of products with outstanding quality and low lead times. All of the innovations or improvements that have been developed in Hot Tub Heating over the past 40 years have come from our heritage in this business. Today we supply the largest Original Equipment Manufacturers in the business and have the know-how and tools to build every Hot Tub heater that has ever been built. We have a team of experienced and dedicated people looking forward to the challenges and opportunities our industry presents.