Carlin Combustion Technology and its sister company Hydrolevel Company are industry leaders in the production of components for the hydronic heating market. Both companies are part of C. Cowles & Company, an American manufacturer based in North Haven, Connecticut and founded in 1838.

Carlin Combustion is the industry’s technological leader in oil and gas, residential and commercial burners, controls, and ignitors. Carlin manufactures oil, natural gas and propane burners, as well as ignitors, controls and related components such as motors, oil valves, circuit interfaces and burner cover kits, for both residential and commercial applications. Carlin also offers Carlin U classes, which are professional training sessions on the components, set up, and testing of its residential oil, residential gas, and commercial oil and gas burners. Carlin has been a leader in the oil heat industry and pioneered many important oil heat technological advancements. Today, the Carlin team is committed to supporting oil heat professionals by supplying excellent products, training, and technical support. UL Listed B100 burners are available at Carlin. This line of burners has been optimized for use with all blends of biofuel, from B5-B100.

Hydrolevel incorporates its proven technology into a line of temperature limit/low water cut-off combinations, low water cut-offs for steam and hot water boilers, multi-purpose tank level controls, and condensate pump controllers. Hydrolevel produces a variety of controls for residential and commercial hot water boilers. Today, Hydrolevel’s product line includes state-of-the-art steam controls, including the programmable VXT Water Feeder, the revolutionary CycleGard foam-compensating cut-off, 1100 Series Mini controls and 500 Series cut-offs for commercial boilers. The Fuel Smart HydroStat control performs as a low water cut-off, as well as a temperature limit control and boiler temperature reset.