Buying an HVAC system for new home construction, a re.ing project, or to upgrade or replace an existing system is a costly project. Knowing an estimate of what your HVAC installation cost is going to be ahead of time can help save you money and ensure that you purchase a system that will adequately accommodate the square footage of your home..Split System. Is made up of two units an outside unit, referred to as the condenser, and an inside unit, usually referred to as the “air handler”..Airflow HVAC Solution lets you build airflow systems. Connect fans coils,es, louvers dampers and much more to form airflow systems. The airflow systems are then ready to connect to hydronic or other systems for final design..The average cost for a HVAC Specialist is $. To hire a HVAC Specialist to complete your air conditioning project, you are likely to spend between $ and $ total. The price of a HVAC Specialist can vary depending on your area..