We’re fully equipped to meet the unique cooling and heating demands of Northern Illinois. Fielding a team of top-notch technicians, we anticipate challenges, get the job done right, on schedule, and provide ongoing support and maintenance. 123 Mechanical has reliable service and practical solutions that result in year-round comfort and savings. Honesty, integrity, and excellent customer service is our constant goal and top priority. Versatile. Knowledgeable. Reliable. Count on 123 Mechanical to provide residential and commercial air conditioning and heating solutions that add value to every dollar.