The price of a New Commercial Air Conditioning unit or a complete HVAC system depends on a wide range of factors. There are no simple answer, you’ll have to choose & consider the brand you want, the type of a system, the efficiency, the piping & ductwork and even some other factors. Commercial HVAC installation cost usually includes both labor, equipment and materials needed for commercial AC installation. On average for a small business expect to pay for a new Commercial HVAC system between $4,000 and $12,000, sometimes price can go up to $15,000-$20,000 for a larger businesses.