HVAC components require trained workers to install and service them. The first step any aspiring HVAC professional should take when wanting to get into the business is to learn about refrigeration. Refrigeration was a revolutionary technology that has been around for less time than the airplane. The application of refrigeration to cooling allowed areas like Phoenix to boom out of the desert.

Then heat pumps were invented to allow the same cycle to be used in reverse for heating. Heat pumps can work in both directions. So you aspiring Denver heating techs, start with learning the process of refrigeration; how the compression cycle works and how expanding and contracting refrigerants behave. Not all refrigerants work in the same way. The efficiency of a system is determined by how much energy it uses to get the job done. Energy is measured in British Thermal Units for most applications. 

The refrigeration cycle works by using four basic components in harmony. These are the compressor, which forces coolant through the system. It goes through an evaporator and condenser, which are regulated by a metering device. Not all of what you learn is only going to be HVAC specific. There are a lot of sciences involved. Denver HVAC techs know about gas laws, how refrigerants act under different temperatures and the limits of the HVAC system.

Once the brain work is out of the way, it becomes time to learn how to apply this knowledge in real situations. You will be working with tools as simple as the screwdriver and duct tape all the way to pipe cutters and multi-meters. Electrical knowledge is a must to. Central air systems use electricity for the cooling as well as heating if the system does not have a gas furnace or boiler. Denver furnace repair men know how different fuels behave as well as being able to work on sheet metal and minor construction. There is not always a perfect place in the house for a new air handler. Roof construction and wiggling around in tight crawlspaces are part of the job.

Most HVAC parts come with instructions, but you may have to do some basic math and read meters to install them correctly. A disregard of these basic requirements has led to the lowering of the public perception of the HVAC professional. If you really like these technical skills, you can dive deeper into an HVACR specialization. The solid state units that control the use of furnaces or air conditioners is a specialized field called HVAC controls. These technicians troubleshoot and install equipment with their knowledge of electrical circuits and controls software.

You do not have to start at a high level with NATE certification. Instead many techs start of just installing external units and work their way up. However once you are running a site, you do need to know all the regulations required. EPA requirements for air quality, and local building codes. Most buildings need to be certified and inspected in metropolitan areas so these regulations cannot be ignored.