Ready for exemplary customer service and the Chicagoland’s most qualified, proven and respected HVAC company since 1952? Then contact Merts Heating & Air Conditioning today. Call us at 833-52MERTS (833-526-3787), with 24-hour emergency service available. We have two locations to better serve you in Steger, IL and Crown Point, IN. Our service area includes a 25-mile radius from both locations.