was founded in New Haven, Connecticut over 180 years ago. Since that time, the company has evolved from manufacturing lanterns and hardware for horse drawn carriages to a multi-divisional manufacturer serving the automotive, the heating and other industries.

Today, Cowles Operating Company, a wholly owned subsidiary of C. Cowles & Company, operates three divisions in a modern 220,000 square foot facility in North Haven, Connecticut:

• Carlin Combustion Technology is a maker of oil, biofuel, and gas fired burners
• Hydrolevel Company manufactures residential and commercial heating controls
• Cowles Products produces plastic profile extrusions. 

With a constant focus on product development, improved manufacturing methods and relentless customer service, Cowles Operating Company’s divisions maintain leadership roles in the industries they serve.