TRG is a family-owned, woman-owned, minority-owned Residential HVAC business. Servicing the Chicagoland area from downtown to the Northshore burbs. Our HVAC roots stretch back over 50+ years of experience in the HVAC industry. Whether you need a maintenance check or an emergency repair on a heating or cooling unit, we are available to handle all of your heating, cooling, and ventilation needs. We strive to exceed your expectations by ensuring that each of our clients receives individualized service.