Cox Engineering

Cox Engineering is an HVAC company in Randolph, MA, located at 21 Pacella Park Dr. It provides complete, end-to-end building systems, including innovative plumbing solutions and durable, compliant process piping for demanding environments. The business serves sectors including healthcare, education, industrial, and commercial facilities, with specific expertise in pharmaceutical, life sciences, biotech, and chemical processing. It offers services ranging from fabrication and project management to value engineering and expert service with rapid response. Cox holds a 4.00 rating based on customer reviews.

Founded in 1914, Cox has grown from a small sheet metal shop into a third-generation, family-owned business. It operates a state-of-the-art clean room at its Randolph, MA office for process piping fabrication, supporting laboratory gases, ultra high purity, toxic and flammable gases, and chemical liquids. The company utilizes Stratus, a cloud-based platform that integrates CAD software with manufacturing tools to streamline workflows. Its Process Pipe team focuses on preconstruction and prefabrication to reduce on-site work and increase project speed. The team includes Chris, who joined in 2024 as Manager of the Process Pipe Division after serving four years in the United States Marine Corps and gaining over 12 years of construction experience, and Juan, who joined in 2025 with over 20 years of hands-on construction experience, including a decade with Local 537.

The company’s leadership includes Jon, a third-generation family owner and CEO who started in 1996 as a shop laborer and previously worked in the Estimating department. Neil, who has over three decades of mechanical contracting expertise, joined Cox Engineering in 1984 and has held roles as an estimator, project manager, and sales engineer. The business supports its teams with a fitness center and an in-house golf simulator. Cox has delivered projects for clients such as Harvard University, Medtronic, Vertex, and Fidelity Investments.

Cox Engineering is known for its positive rating from customers who have reviewed it, reflecting a reputation for reliability and performance. As a local HVAC provider in Randolph, it stands among the strongest in its category for delivering results that stay on time, on budget, and in scope.

Cox Engineering combines over a century of experience with modern fabrication capabilities to provide reliable HVAC and process piping solutions to Randolph and the greater Boston area.

Cox Engineering sits on Pacella Park Drive in Randolph, Massachusetts, just over a quarter mile from the Blue Hill River and less than half a mile from Yankee Division Highway.

BizScoreAI assigns Cox Engineering an Authority score of 75 out of 100, which reflects a solid trust signal by clearly showing who is behind the business for search engines. The On-Page score is 72 out of 100.