At our core we are a commercial HVAC wholesaler. Hydronic Parts Group is manufacturer representative for RBI Water Heaters, Temprite, Sterling, Islandaire. We sell only to licensed contractors and offer many boiler room services such as 'to the pad deliver', commissioning of products and exceed the level of service of any competition. HPG is the #1 RBI water heater sales team in North America 10 years running. With over 2,500 successful retrofit and design build projects under our belt and growing, you can count on our team to deliver quality materials on budget.