HVAC MECHANICAL CONTRACTORS SERVING WESTERN MASS SINCE 1888

McCormick-Allum Co. is the oldest HVAC company in Massachusetts, providing top-quality heating and cooling solutions to customers throughout Massachusetts and Connecticut since 1888! We pride ourselves on our experience and expertise, and our team of highly trained and certified professionals is available 24/7 to meet your needs. We offer a wide range of services, from design and installation to maintenance and repair, and we work with both commercial and residential customers. Whether you need a new system installed or your existing system serviced, we're here to help.

Our experienced team of tradespeople includes refrigeration and service technicians, sheet-metal workers, pipe fitters and plumbers, electricians, designers, and engineers. We are proud to say that nearly all of our work is performed by our in-house staff and employees, ensuring that each job is done with the utmost care and attention to detail. If you're looking for a contractor you can trust to handle your building's systems needs, look no further than McCormick-Allum Co.