Commercial HVAC | Commercial Units | Lake Zurich, IL


We are monitoring the news regarding the pandemic and taking additional sanitary precautions to protect the health and safety of our customers and Markgraf staff members. Our office remains open, our technicians are available and we have staff to answer your call.  Please contact us with any questions you may have.

Our customers' safety and satisfaction remain a priority during this time.

Serving the Chicagoland Area | 847-438-0032

Markgraf's Heating & Air Conditioning-Logo

Trusted and recommended for over 45 years.

24 hour emergency service

785 Oakwood Rd. Lake Zurich, IL 60047

Commercial units repair

Units that cool and heat commercial spaces are often times large, or multiple units are used. When your units fail, it could result in unbearable work conditions for your employees. Our name-brand units are reliable and durable and provide efficient temperature control when you need it most.


Choose from a variety of makes and models. Markgraf's Heating & Air Conditioning can direct you on the fit and air production need for the size of your space. All units are backed by manufacturers' warranties with the option to extend. We work with contractors and builders, offering full commerical HVAC services.

Schedule an annual review for preventative maintenance

Replace your units with highly efficient eco-friendly systems and reap the rewards of increased comfort and a high return on your investment. When you work with Energy-star products, you can immediately reduce your bills.

Energy efficiency equals money back in your pocket

Have all of your commercial units serviced by the professionals at Markgraf’s Heating & Air Conditioning.

Produce optimal conditions for your employees

Call today and take advantage of our huge in-house stock! Wall-to-wall brand names available!


24/7 Emergency Service


Let Our Estimating Staff Bid Your Next Construction or Commercial Project, Big or Small.

Full commercial HVAC services

Commerical Air Conditioning

Commercial Heating

Commercial Indoor Air Quality