Since 1952, Merts Heating & Air Conditioning has provided quality HVAC service to its residential and commercial customers in the Chicago area and nearby areas in Indiana. Our reputation as Chicagoland’s HVAC leader has been built on providing the best heating and cooling equipment and sales and service. Merts has been recognized by the Better Business Bureau for excellence, and our Select Contractor providers have been awarded with NATE and BPI certifications. We take pride in offering our customers the best products and services available and promise to earn your trust.