Cox Engineering
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HVAC innovators in the Greater Boston area. The company’s strength lies in its ability to attract and retain HVAC talent.
Founded in 1914 and headquartered in Randolph, Massachusetts, Cox Engineering is a third-generation family-owned manufacturer of large custom air handling units, HVAC piping and sheet metal ductwork. A mechanical construction leader in the Greater Boston area, Cox Engineering serves a wide range of sectors including, hospitals, life science companies, universities, restaurants and the hospitality
And got it done!
08/03/2026
Melting metal💪👨🏭
Big capabilities. Bigger possibilities.
Take a behind-the-scenes drone tour of our facilities and see where innovation meets craftsmanship.
A dedicated prefabrication shop helping streamline projects before they reach the field.
A manufacturing facility building custom air handling units for some of the industry’s most demanding applications.
A fully equipped process pipe shop delivering precision fabrication for complex systems.
From fabrication to final assembly, every project is backed by the people, technology, and expertise that make quality possible.
See where it all comes together.
Help us in welcoming Annabelle our new office administrator! We are so excited to have her on our team (especially because she is just as excited for social media as me)!
07/20/2026
Our process pipe shot welding away swipe for some weld shots👨🏭
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Address
21 Pacella Park Drive
Randolph, MA
02368