Commercial and Industrial Systems
Electrical, Plumbing and HVAC Solutions
From the professionalism of our sales engineers, to the dedication of our field personnel, we are dedicated to delivering you the best.
Why Breen & Sullivan Mechanical Services?
Breen & Sullivan Mechanical Services provides electrical, plumbing, and HVAC services to commercial clients throughout the Boston area. Our skilled and safe technicians specialize in installation, maintenance and repair of commercial and industrial systems. We support a range of industries, including healthcare, education, government and mission critical data centers.
We’ve partnered!
We are pleased to announce the partnering of ENCON Commercial Services and Breen & Sullivan Mechanical Services, Inc. This new relationship will increase the service capabilities and resources while maintaining the same level of customer intimacy that you experienced with each organization.
Industries we serve.
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Commercial
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Industrial & Manufacturing
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Mission Critical Facilities
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Research & Development
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Utilities
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Healthcare
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Education
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Custom Use
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Commercial
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Industrial & Manufacturing
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Mission Critical Facilities
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Research & Development
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Utilities
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Healthcare
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Education
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Custom Use
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Begin your HVAC career search.
As a service company, our engineers, technicians and support staff are our most important resource. Are you ready to work for Breen & Sullivan Mechanical Services?
What Goes Into an HVAC System?
Learn about Built Up and Unitary Systems.