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HVAC

Commercial HVAC Solutions that are Customized to Your Needs and Challenges

You need an HVAC partner, not just a contractor—one that could design, build, and install a system tailored to your exact needs while handling any unexpected challenges along the way. Harold Brothers serves businesses in Massachusetts, Rhode Island and Southern New Hampshire

Harold Brothers delivers custom HVAC solutions that keep your business running smoothly—on time, on budget, and built to last.

Whether you're facing a fast-track construction project, a complex process piping challenge, or the need for a seamless retrofit, our team delivers precision-engineered solutions that minimize downtime and maximize efficiency.

With our expertise in design/build, new construction, and specialized HVAC systems, we ensure your facility meets industry standards while staying on schedule and within budget.

 

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Seamless Design/Build Expertise

We take projects from concept to completion, eliminating miscommunication between designers and installers and ensuring a streamlined process.
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Fast-Track Installation Without Compromising Quality

Tight deadlines? No problem. Our team has the experience and manpower to meet aggressive schedules without cutting corners.
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Specialized Process Piping & Custom Solutions

From high-tech labs to large-scale industrial facilities, we design intricate piping and HVAC systems that meet the most complex demands.

Specialties

Air Conditioning

Air Handlers

Boilers

Chiller Service

Commercial HVAC Service

Server Room AC

Direct Digital Control (DDC)

Dust Collection and Fume Control

Furnace / Heating Systems

Geo-Thermal HVAC

Make Up Air Units

Medical Gas Systems

Refrigerant Conversion Services

Refrigeration Units

Rooftop Units

Start-up And Commissioning Services

Post Construction Warranty Service

Ventilation Systems

VRF Systems

What Our customers are saying

“We can depend on Harold Brothers Mechanical from start to finish. They are always a team player and have earned the reputation as a premier subcontractor from performance, safety and quality with Callahan Construction.”

Patrick Callahan, President – Callahan Construction Managers

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200 Smith St

Harold Brothers – The HVAC Partner That Delivers

Harold Brothers is the team that gets it right the first time. We don’t just install Commercial HVAC systems; we engineer solutions that fit your exact needs, keep your facility running at peak performance, and eliminate surprises along the way. From fast-track builds to intricate retrofits, we handle the challenges others can’t.

Chiller