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30 Years
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Emergency
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Your Trusted HVAC Partner for Commercial & Industrial Solutions
Mechanical Construction Services (MCS) has been a trusted leader in HVAC contracting since 1996, serving commercial, institutional, and industrial clients across Massachusetts and New Hampshire. Our team brings over 120 years of combined experience in design/build projects, retrofitting, and comprehensive maintenance programs, ensuring systems operate at peak efficiency. We prioritize steadfast honesty and excellence, offering 24/7 emergency services to minimize downtime and maximize cost savings for our clients. Our in-house expertise spans equipment installation, energy management systems, and EPA-certified technician support, backed by computerized maintenance programs and bonded operations. Founded on principles of integrity, we treat clients and subcontractors with respect while fostering a positive workplace culture.

Our leadership team, including industry veterans with decades of experience, drives innovation in climate control technology and project management. We guarantee accountability through single-source contracting, eliminating delays and miscommunications. Our preventative maintenance solutions are tailored to reduce utility costs and extend system longevity. With radio-dispatched service trucks and certified welding/piping specialists, we deliver reliable, scalable solutions for projects of all sizes. Our commitment to safety, environmental sustainability, and client satisfaction has solidified our reputation as a top-tier HVAC provider.
Services
HVAC Construction Preventative Maintenance 24-Hour Emergency Service Design/Build Projects Energy Management Systems Sheetmetal Installations Piping Systems Building Automation Pharmaceutical Plumbing Welding Services
Details
  • Year established: 1996
Highlights and features
  • We provide 24/7 personalized HVAC emergency support.
  • Our team has over 120 years of combined HVAC industry experience.
  • We offer in-house warranties and computerized maintenance programs.
  • Our technicians are EPA-certified for environmental compliance.
  • We implement tailored preventative maintenance plans to eliminate downtime.
Associations and certifications
  • EPA
What people say
Comprehensive service Preventative maintenance programs 24/7 support Cost savings Expert technicians
Services
HVAC Construction
We specialize in full-spectrum HVAC construction for commercial and industrial facilities, including government buildings, hospitals, and pharmaceutical cleanrooms. Our licensed team handles new installations, retrofits, and system modifications with precision. Clients benefit from turnkey project management and energy-efficient designs that reduce long-term operating costs.
Preventative Maintenance
Our customized preventative maintenance programs ensure HVAC systems operate at peak efficiency 24/7. Using computerized tracking, we schedule inspections and repairs to prevent breakdowns and extend equipment lifespan. Clients save on utility costs while avoiding unplanned downtime through our EPA-certified technicians' proactive care.
24-Hour Emergency Service
We provide 24/7 emergency HVAC support with radio-dispatched trucks and on-call technicians. Rapid response minimizes production losses during system failures. Our bonded team resolves critical issues promptly, ensuring business continuity for commercial and industrial clients across New England.
Design/Build Projects
Our in-house engineers deliver integrated design/build solutions for HVAC systems, from concept to completion. This approach streamlines timelines and reduces costs through unified accountability. Clients receive energy-efficient, code-compliant systems tailored to specific facility requirements in sectors like healthcare and pharmaceuticals.
Energy Management Systems
We implement advanced energy management systems to optimize HVAC performance and reduce utility expenses. Our EPA-certified technicians integrate DDC controls and energy recovery solutions, providing real-time monitoring and data-driven adjustments for commercial and industrial facilities.
People
Brian LeMay
Founder/Principal
With 40+ years in HVAC and plumbing, Brian established MCS in 1996 to prioritize integrity and client satisfaction. His leadership fosters a culture of excellence, ensuring top-tier service delivery and employee well-being.
Michael J. Gervino
Principal/President
A seasoned executive, Michael oversees financial and management operations. He maintains MCS's commitment to service excellence while ensuring a safe, supportive workplace for employees.
Dennis Bruce
Vice President of Service
With 35 years of HVAC experience, Dennis manages service operations and maintenance plans. His expertise ensures reliable, efficient system performance for MCS clients.
Nate Durand
Vice President of Construction
Nate leads construction projects with 15+ years of industry experience. His hands-on background ensures seamless execution of commercial HVAC and plumbing projects across New England.
Michael Eaton Jr.
Project Manager
A 20-year MCS veteran, Michael manages projects and service sales. Certified in sheet metal and refrigeration, he combines technical expertise with client-focused problem-solving.
Questions
What HVAC services do you offer?
We provide construction, preventative maintenance, 24/7 emergency repair, design/build projects, and energy management systems for commercial and industrial clients.
Do you offer emergency HVAC service?
Yes, our 24/7 emergency service includes radio-dispatched trucks and on-call technicians for rapid response across Massachusetts and New Hampshire.
How can you help reduce HVAC costs?
Our preventative maintenance programs and energy-efficient systems reduce utility expenses while extending equipment lifespan through proactive care.
What areas do you serve?
We serve commercial and industrial clients throughout Massachusetts and New Hampshire, with expertise in New England climate challenges.
Are your technicians certified?
Yes, our team includes EPA-certified technicians, licensed sheet metal journeymen, and specialists in pharmaceutical plumbing and welding.
Do you handle large-scale projects?
Yes, our experience includes managing Boston's largest HVAC projects, with capabilities ranging from small renovations to complex institutional facilities.