Need Commercial HVAC Installation or Repair in Green Bay, WI?

Founded in 1918, Hayes Mechanical is proud to be one of Green Bay’s premier commercial HVAC companies. What began as a small family-owned business more than 100 years ago, Hayes Mechanical has evolved into a thriving company with offices in seven major cities today, including Chicago, Omaha, St. Louis, Pittsburgh and Minneapolis.

Whether you need information about our building automation systems or commercial HVAC installation, maintenance, or repair services, our technicians are knowledgeable about all the systems and equipment you depend on daily. Additionally, we’re available 24/7 for emergency services, so we're just a phone call away in case you need our assistance after hours. Call today for a quote!

Hayes Mechanical

2132 E. Deerfield Avenue, Suite 401
Suamico, WI 54173

Phone: (920) 200-6737



Opening Hours

Sunday                                                                07:00 AM - 05:00 PM   Monday                                                              07:00 AM - 05:00 PM

Tuesday                                                              07:00 AM - 05:00 PM

Wednesday                                                        07:00 AM - 05:00 PM

Thursday                                                            07:00 AM - 05:00 PM

Friday                                                                  07:00 AM - 05:00 PM

Saturday                                                             07:00 AM - 05:00 PM                          

Comprehensive Commercial HVAC Repair & Maintenance Services

Commercial HVAC repair, installation, and maintenance jobs are best left to the team of experts at Hayes Mechanical. We specialize in installing and servicing a wide range of commercial HVAC systems, so your indoor temperatures are reliable, precise, and operating smoothly. We are also proud to serve as your boiler repair specialists in Green Bay, and our technicians can install, service, or repair high-efficiency condensing boilers, cast-iron boilers, steam and hydronic systems, steel tube boilers, and much more.

Additionally, Hayes Mechanical offers comprehensive preventative maintenance agreements to ensure that your HVAC systems are consistently operating at peak performance. Maintenance is crucial to ensuring your systems last for many years to come while running as efficiently as possible to save money on energy costs. Our professionals are highly trained and experienced in all commercial HVAC services, including:  

  • Chiller Systems (Water Cooled & Air Cooled)
  • Cooling Towers
  • Packaged Rooftop Units & Split Systems
  • Boilers and Related Auxiliary Equipment.
  • Steam & Hot Water
  • Refrigeration
  • Air Handlers & Make-Up Air System
  • Units Heaters
  • Exhaust & Ventilation Systems
  • Piping Systems
  • Sheet Metal, Ductwork, Flue Stacks


Reliable Building Automation Systems with 24/7 Support

From complex systems to simple ones, Hayes Mechanical’s Building Automation / Controls team delivers comprehensive solutions to today’s building automation requirements. Our team of experts specializes in non-proprietary open-architecture control systems, so we can provide you with seamless control of your temperature, lighting, access, and energy management requirements.

We work with the leading industry manufacturers, including Carrier, Distech Controls, Honeywell, Johnson Controls EasyIO & FX, KMC Controls, and several others. Our building automation experts will exceed your expectations with their expertise and knowledge about building automation systems, including critical alarm monitoring and preventative system maintenance.


Why Choose Hayes Mechanical for Commercial HVAC?

When you choose Hayes Mechanical for your commercial HVAC installation, repair, and maintenance needs, you can feel confident you’re choosing a company that has a well-earned reputation for providing the highest level of customer care and quality workmanship on every job. We’ve been providing commercial and industrial solutions for more than 100 years in Chicago, IL, and surrounding areas, including Pittsburgh, PA; St. Louis, MO; Minneapolis, MN; and Omaha, NE. Contact us today for more information about the services we provide in Green Bay, WI, or to schedule an appointment. We look forward to hearing from you!