Guardian Heating & Cooling Service

Guardian Heating & Cooling is a Chicago-based HVAC company established in 1953 that provides residential and commercial heating, air conditioning, boiler, ductless and indoor air quality services along with 24/7 emergency support, maintenance plans (the Shield of Protection), rebates and flexible financing; the company emphasizes long-standing local experience, factory-trained and NATE-certified technicians, upfront pricing, comprehensive warranties and customer satisfaction while operating from offices serving Chicago, Northbrook and many surrounding suburbs.