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About Us


MSI Mechanical Systems is a full-service mechanical contractor and facilities service provider for commercial, industrial & data center environments. From the basic to the most sophisticated of mechanical systems, MSI has engineered and built them. In fact, since our founding in 1995, we have installed almost every type of HVAC & process piping system in the industry.

Choosing a mechanical contractor should not be predicated on the lowest price, but rather on the combination of price and these four critical factors: sensible design, quality installation, project performance, and service after the installation.

MSI Mechanical has the most experienced and skilled technicians in the business. We have dedicated our team to meet the expectations of our customers be showing pride and teamwork in all that we do. The result is quality. We stand behind our name and bring our customers the highest quality installations.

Company profile

MSI Mechanical Systems Inc. is a Salem, New Hampshire based full service mechanical contractor and facilities service provider for your Commercial, Industrial & Retail projects.

We know what it takes to successfully build and service your mechanical systems. Since 1995 we’ve been doing just that throughout New Hampshire and Massachusetts.

In summary, these are the reasons to choose MSI as your full service contractor:

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  • We begin with reviewing existing plans and developing recommendations in areas such as building material options, material feasibility and more.
  • With expertise sharpened by years of experience, we can offer competitive pricing on our estimates.
  • We ensure proper deliveries of materials, equipment and supplies, including pre-ordering of long-lead items.
  • We hold status meetings to ensure proper communications among the client, architect, engineer and subcontractors.
  • Our company is fully insured and has bonding capabilities.