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Business Details
49 Years
experience
Emergency
services
Your Trusted HVAC Partner in Buffalo, NY
MJ Mechanical has prioritized customer satisfaction for over four decades, evolving into a leader in design build processes, value engineering, and preventative maintenance. Our team of highly trained professionals brings extensive experience in complex mechanical systems and historic renovations across industrial, healthcare, education, and multi-unit residential markets. We maintain longstanding partnerships with industry professionals and have expanded our client base through consistent commitment to exceeding client expectations. Since 1977, we have grown to become a premier commercial and industrial mechanical contractor in Western New York. Our 1998 partnership with Comfort Systems USA enhanced our expertise and manpower, while the 2017 merger with N.E.

Mechanical solidified our position as a single-source contractor for HVAC services. We serve Western New York including Buffalo, Rochester, and Olean, as well as parts of Northwestern Pennsylvania. Our mission emphasizes excellence in service, mutual respect between stakeholders, and prompt customer response. We maintain technical proficiency with major equipment manufacturers and hold certifications including NEBB for balancing and commissioning. Our national footprint combines with strong local presence to deliver tailored solutions for commercial and industrial clients.
Services
HVAC Services Building Automation Sheet Metal Fabrication Clean Room Installation Process Skids
Details
  • Year established: 1977
Highlights and features
  • We offer 45+ years of specialized HVAC expertise in Western New York
  • Our team provides 24/7 emergency service and maintenance support
  • NEBB-certified professionals ensure system performance standards
  • We partner with major equipment manufacturers for technical proficiency
  • National resources with local market knowledge and presence
Associations and certifications
  • National Environmental Balancing Bureau (NEBB)
Services
HVAC Services
We provide comprehensive HVAC solutions including design, installation, maintenance, and retrofit for commercial and industrial clients. Our NEBB-certified technicians ensure systems meet design specifications through rigorous testing and balancing. With 24/7 service availability, we address emergency repairs and scheduled maintenance for packaged units, chillers, boilers, and control systems across Western New York.
Process Skids
Our process skid fabrication creates self-contained units for industrial applications including high-pressure systems, chemical processing, and power generation. Off-site construction reduces timelines by 30-40% while improving quality through controlled environment fabrication. We deliver fully tested modules with ASME-certified welding and comprehensive documentation for seamless on-site integration.
Building Commissioning
NEBB-certified commissioning ensures HVAC systems operate at peak efficiency per design specifications. We verify equipment installation, optimize energy performance, and document system parameters to reduce operating costs by up to 20%. Our process includes functional testing, code compliance verification, and owner training for long-term system reliability.
Sheet Metal Fabrication
In-house sheet metal fabrication produces custom HVAC components meeting SMACNA standards. Our facility handles complex ductwork geometries for commercial and industrial applications, including cleanrooms and pharmaceutical facilities. Precision manufacturing reduces field installation time by 50% while maintaining strict quality control through ASME-certified welding processes.
Clean Room Installation
We design and install ISO-certified cleanrooms for pharmaceutical, medical device, and semiconductor manufacturing. Our solutions maintain Class 10 to Class 100,000 environments through HEPA filtration systems and pressure-controlled zones. The installation includes modular wall systems, laminar flow workstations, and validation testing to meet FDA and ISO 14644-1 compliance requirements.
People
Dan Fetes
President
Dan Fetes leads MJ Mechanical's strategic growth initiatives with over 25 years of HVAC industry experience. He oversees operations across Western New York and Pennsylvania, maintaining the company's commitment to technical excellence and customer satisfaction since joining in 2005.
Nancy Pohlman
Vice President
Nancy Pohlman manages financial operations and business development for MJ Mechanical. With three decades in the mechanical contracting sector, she ensures fiscal responsibility while expanding service offerings to meet evolving client needs across commercial and industrial markets.
Mike Poole
Forever In Our Hearts
Mike Poole served MJ Mechanical for 36 years before his passing in 2020. As a key leader, he established the company's reputation for technical excellence and customer service. His legacy continues through the team's commitment to his standards.
Questions
What HVAC services do you offer for industrial clients?
We provide complete industrial HVAC solutions including process cooling systems, cleanroom environments, and specialized ventilation for manufacturing facilities.
Do you provide emergency HVAC service?
Yes, our commercial service department operates 24/7 for emergency repairs and system maintenance across Western New York.
Which areas do you serve?
We serve all of Western New York including Buffalo, Rochester, Olean, and parts of Northwestern Pennsylvania.
Are you NEBB certified?
Yes, our balancing and commissioning departments hold NEBB certification for HVAC system performance verification and documentation.
What is process skid fabrication?
Process skid fabrication creates modular industrial systems built off-site for faster installation. We design and manufacture custom skids for chemical processing, power generation, and pharmaceutical applications.