New England's Trusted Mechanical Contractors

Merrimack Valley Corp. is New England’s full-service mechanical contractor. We offer complete Plumbing & HVAC services which include project management, design, sales, installation, service and maintenance. Our onsite, fully automated sheet metal fabrication shop enables Merrimack Valley Corp. the ability to manufacture our own sheet metal. Our on staff of licensed plumbers can handle any plumbing project of any size. This allows us superior flexibility to adjust to the ever changing demands of any project.

Since 1986, Merrimack Valley Corp. is the preferred Plumbing, Heating, Air Conditioning and Ventilation (HVAC) mechanical contractor of many of the region’s most respected general contractors and end user clients. Merrimack Valley Corp. delivers fast professional service with fully equipped service vehicles on call 24 hours a day, 7 days a week. Our sales and technical staff are among the most highly trained in the industry. Merrimack Valley’s goal oriented approach and unmatched abilities in new construction and service are what make us a leader in the industry today.

Our service department can diagnose and repair all types of Plumbing and HVAC systems. We have a top notch maintenance group and offer custom tailored maintenance plans to keep your equipment running efficiently and at it’s peak performance for many years.

Contact us today to see how we can put our experience to work for you.

Fleet 50 of vehicles to repond to your facilitys heating, air conditioning, and ventilation needs throughout the Boston Regional and southern NH regioanl areas.

State of the art on site sheet metal fabrication shop. Heating, air conditioning mechanical contractor.

RTU Roof tops, gas furnaces, boilers, air conditioning, economiser controls, service contracts, design build services.


Merrimack Valley Corporation is a skilled commercial and industrial heating and cooling mechanical contractor of commercial and industrial plumbing, commercial and industrialheating, commercial and industrialair conditioning, and commercial and industrialmechanical contracting services in eastern Massachusetts and the southern New Hampshire areas including : ESSEX County MA, HAMPDEN County MA, HAMPSHIRE County MA, MIDDLESEX County MA, NORFOLK County MA, PLYMOUTH County MA, SUFFOLK County MA, WORCESTER County MA, BELKNAP County NH, GRAFTON County NH, HILLSBOROUGH County NH, MERRIMACK County NH, ROCKINGHAM County NH, STRAFFORD County NH, SULLIVAN County NH and surrounding areas.
These regional surroundiong areas also include Amesbury MA, Andover MA, North Andover MA, Billerica MA, Braintree MA, Boston MA, Boxford MA, Byfield MA, Cambridge MA, Chelmford MA, Dracut MA, Framingham MA, Gerogetown MA, Groveland MA, Haverhill MA, Lawrence MA, Lowell MA, Merrimac MA, Methuen MA, Newbury MA, Newbury Port MA, Newton MA, Peabody MA, Quincy MA, Saugus MA, Tewksbury MA, Waltham MA, Worcester MA. As well as Atkinson MA, Danville NH, Concord NH, Derry NH, Dover NH, Durham NH, Hampstead NH, Hudson NH, Hollis NH, Kingston NH, Lebanon NH, Londonderry NH, Manchester NH, Nashua NH, Paistow NH, Portsmouth NH, Rochester NH, Salem NH, Sandown NH, Windham NH, and surrounding areas.
To set-up a repair service estimate or replacement estimate, call (888) 257-6876. Merrimack Valley Corp. is an authorized dealer of many AC, Air conditioners, furnace, humidifying systems, filters and filtration systems, thermostats and energy management control systems, water heaters, computer room cooling systems, package roof top units, RTU, cooling towers, and chillers. We service all brands including; Lennox, Carrier, Burnham, York, Bryant, Payne, Bradford White, Rinnai, Kohler, Aprilaire, Arzel, Honeywell, Trane, Rheem, Ruud, Amana, Crown, Frigidaire, Gibson, Goodman, Lochinvar, Maytag, American Standard, GeoExcel, General,Weil McLain, A.O. Smith, White Rodgers, Dynamic and Skuttle. Let us perform our service magic on your HVAC and plumbing system in your home or workplace.