HVAC SystemInstallation

Ahern has been designing, installing, and servicing HVAC systems since the company's inception over a century ago. Our team of professional engineers, licensed designers, experienced project managers, and skilled foremen can bring your next HVAC project from idea to reality.

Design, Installation &Service

Whether you’re constructing a small office building or a multi-million dollar hospital, matching your HVAC systems to your building needs requires a knowledgeable and experienced team. Because we specialize in new construction HVAC projects, we understand your systems also need to be energy efficient to keep your utility costs as low as possible. Our energy professionals will help you achieve optimal efficiency, without compromising your comfort. We employ 3 LEED accredited professionals, 2 Certified Commissioning Process Providers (QCxPs), and 5 NEBB TABB Certified Professionals as resources to meet your efficiency goals. Using our in-house sheet metal fabrication shop, we are able to ship materials to your site as needed. This increases accuracy and project efficiency by an average of 18 minutes per preassembled piece of ductwork. In addition, our shop can sanitize and seal ductwork for projects where cleanliness is a top priority.

The first step to achieving a productive work environment is providing a comfortable work space. Naturally, a well-maintained heating and air conditioning system are essential to your employees' and customers' comfort, and in order to keep it running efficiently, servicing is key. As one of the most trusted commercial HVAC service companies in the Midwest, not only will you receive prompt service, you won’t have to worry about our teams’ knowledge and corrective service capabilities. In the last 18 months, we’ve performed almost 6,600 mechanical preventive maintenance inspections. Whether you're in need of basic air conditioner maintenance or full commercial heating and air conditioning repair, we have yet to find a deficiency we can't fix. At Ahern, we understand your time is important, which is why our HVAC service team comes prepared to make timely, efficient HVAC repairs. These repairs are completed faster, allowing you to get back to your business quicker.


In the last five years, Ahern has completed over 2,186 HVAC balancing, life safety inspection, and commissioning projects.

Ahern's team was professional, prompt, and brought a great deal of expertise to our project! Their team was also very valuable in assisting us with our LEED certification. Their knowledge in the certification process was very helpful.
C.D. Smith Construction



Ahern has approximately 759 craftspeople working on projects at all times.

I was very pleased with the expertise and level of service shown by both the project manager and field crew. I felt that this project was in very good hands with your company. My experience with Ahern on this project only reinforces that they are able to deliver quality work with exceptional service.
Jessica Wenzel Project Engineer Berghammer Construction