Merz is recognized as one of the largest, most modern residential and commercial heating, ventilation and air conditioning (HVAC) companies in the state of Illinois.

The Merz mission is to provide their customers with the total indoor comfort by supplying the very best central air installations, service, and maintenance. But above all, Merz works to earn your trust. Because nothing is better than dealing with someone you trust. And nothing is worse than dealing with someone you don’t. It takes years to build trust and only a moment to destroy it. That’s why Merz Heating and Air Conditioning stands by their word and they stand behind their work.