Technical Excellence — Safety Without Exception.

We exceed industry standards, and every decision reflects our expertise and our commitment to keeping our team safe.

5.0/5

“Every great structure begins with a vision, and we bring that vision to life.”

Adams Lawless - CEO

Mulvaney Mechanical Services

Mulvaney Mechanical provides specialized mechanical construction for semiconductor fabrication facilities (fabs), medical facilities, pharmaceutical laboratories, clean rooms, and other controlled environments.

Mechanical Construction Expertise

Mechanical construction for semiconductor fabs, medical, pharmaceutical, and research facilities.

High-Purity Clean Room Installations

High-purity clean room installations, including Class 10 environments

Temperature-Controlled Environments

Precision temperature-controlled spaces with ±0.1°C stability

Safety-Driven Job-Site Culture

A job-site culture grounded in safety and craftsmanship

Long-Term Client Partnerships

Steady, collaborative client relationships.

OSHA-Trained Teams

Equipped with proper PPE and ongoing training

Specialized Mechanical Work for Complex, Controlled Environments

Mulvaney Mechanical provides HVAC and specialty process piping installations for commercial, industrial, and institutional facilities. Our experienced journeymen are trained across all phases of system installation, service, and repair—delivering precise, reliable work that meets the technical demands of each environment.

Healthcare

Precision HVAC and specialty piping for medical and laboratory environments.

Research & Education

Mechanical System Construction and Maintenance Supporting Classrooms, Labs, and Research Spaces

Manufacturing & Industrial

Mechanical Infrastructure Designed for Production Efficiency and Operational Reliability

Technology & Data Centers

HVAC and Mechanical Systems Supporting Continuous IT Operations

What Our Clients Say About Us

Michael Roberts
Homeowner
“The team turned our vision into a modern and elegant home. The quality and attention to detail were beyond our expectations.”
Samantha Turner
Project Manager

“They delivered our office tower on time and with stunning architectural precision. Highly professional and reliable team.”

Daniel Kenny
CEO & Founder

“Their approach to sustainable design and modern construction is impressive. Our facility is efficient, beautiful, and future-ready.”

What Our Clients Say About Us

“We have used Mulvaney Mechanical for several years in emergency situations ranging from gas leaks and drainage problems to HVAC system installation and repair. Their emergency response is second to none, their staff are always professional, honest, reliable, hardworking conscientious and courteous. This company does not take any shortcuts…. They do things right! I would recommend them to anyone without hesitation.”

Joseph Starson Plant Supervisor, Stamford Hospital

“I have always received good service from Mulvaney Mechanical. Timing and quality have always met my expectations and everything is communicated in a professional and timely manner.”

Scott Arrick Engineering Services Plant Operations & Maintenance Manager EVS & Food Service, Sharon Hospital, Nuvance Health

“We consider the Mulvaney Mechanical team a construction partner who has proven to be creative in problem resolution, reliable in time commitments, and overall consistent in meeting our expectations.”

Edward Burke Facility Engineer, Boehringer Ingelheim Pharmaceuticals, Inc.

“Mulvaney Mechanical have been a huge help in successfully completing our projects in addition to providing useful information that has saved time and money. They are a true trusted partner.”

Bruce MacGregor Director of Facilities and Support Services, Putnam Hospital, Nuvance Health

“I have used Mulvaney Mechanical for years and during all this time I have found this firm to be reliable, approachable, efficient and knowledgeable.”

Lee Letourneau Chief of Plant Operations Stationary Engineer Supervisor, St. Vincent’s Medical Center, Hartford Healthcare

“Mulvaney Mechanical excels at the difficult, complicated “mission impossible” type projects. With over 30 years of construction experience with them, Mulvaney Mechanical has always exceeded the customer’s expectation and completed the jobs on time and on budget.”

Bob Henry Facility Director (ret), Purdue Pharma

“Mulvaney Mechanical is our preferred contractor, no job is too small nor too large. Their performance and quality of workmanship is second to none no matter how difficult the project is.”

Mark Wcislo (ret) Facilities Engineer, ASML

“I would like to express my appreciation to the Mulvaney team working on our project. This has not been an easy process from the start. The Mulvaney crew batted 1,000! Job well done! “

John Brady Facility Engineer, Westside Development Partners, LLC

Let’s Discuss Your Facility Challenges

A technical assessment focused on safety, performance, and long-term reliability.

Technical and Operational Governance

Mulvaney Mechanical is led by an experienced team with backgrounds in engineering, field operations, project management, and corporate administration. Their governance establishes clear standards, supports our teams, and ensures every project is executed with accountability, precision, and technical rigor.

George Mulvaney

Founder & President

Charles Brough

P.E., Vice President

Mark Mulvaney

Vice President

Janette Blackstock

Vice President and Corporate Secretary

Let’s Discuss Your Facility Requirements

A consultation focused on safety, performance, and long-term reliability.

Our Services

Designed to meet the needs of commercial, industrial, and institutional facilities.

Process Piping

Process-Piping

Heating

Air Conditioning

cooling-tower

Plumbing

plumbing

Clean Rooms

clean-rooms

High-Purity Gas Piping

Proven Mechanical Systems, Built for Demanding Environments.

0 +

Years of Experience Decades

WE ARE READY TO ADDRESS YOUR SERVICE ISSUES 24 HOURS A DAY

Send Us A Message

In an emergency, please call. Online forms are monitored during business hours only.

DiscussYour Mechanical Project

Support for safe, reliable, and technically sound mechanical systems.

In an emergency, please call. Online forms are monitored during business hours only.

Phone Number

(203) 797-8005

Email Address

info@mulvaneymechanical.com

Address

4 Christopher Columbus Ave. Danbury, CT. 06810

Working Hours

7:00 AM – 5:00 PM
*24 Hr Emergency Service Available

Community Commitment

Community involvement has long been part of Mulvaney Mechanical’s culture. For decades, our team—under the leadership of George Mulvaney—has supported organizations that serve and strengthen our region, including Regional Hospice, Ability Beyond Disability, the Association of Religious Communities (ARC), and the Boy Scouts of America.

Our sustained commitment to service has been recognized through honors such as the Cecil J. Previdi Award, the Robert S. Young Humanitarian Award, the Spirit of Humanity Award, and formal recognition from ARC for longstanding partnership and support.

Through humanitarian efforts, youth leadership programs, and health and outreach initiatives, Mulvaney Mechanical remains committed to contributing responsibly and meaningfully to the communities where we live and work.

Clear answers about our capabilities, services, and project approach.

We specialize in full-scale mechanical contracting, including HVAC, plumbing, piping, fabrication, and maintenance for commercial, industrial, and institutional facilities.

You can submit a request through our contact form or call our office directly. A member of our estimating team will follow up with next steps.

Yes. After an initial discussion, we schedule site visits to assess project requirements, safety considerations, and system conditions.
We serve clients across the region, including commercial, industrial, and institutional properties throughout Connecticut and the surrounding states.
Most inquiries receive a response within one business day.
Yes. We collaborate with engineering partners and provide design-assist and design-build services when needed.
Reach out through our website or call our office. Our team will help you schedule the earliest available appointment.