Proudly serving the Southern Chicago area since 1945, Ralphâ€s Heating & Air Conditioning is committed to prompt response and honest work for all of your heating and air conditioning needs. A full-service HVAC contractor, our skilled technicians can help you maintain your existing system or install a new, energy-efficient system to help you stay comfortable, year-round. We sell and install a comprehensive line of HVAC and indoor air quality products from the industryâ€s leading manufacturers.