Most people know what HVAC is but many don’t know what it stands for. Well, it stands for heating, ventilation and air conditioning. Heating refers to a gas furnace, an electric furnace or even a boiler. Ventilation refers to air ducts and ductwork. Air conditioning refers to just what it says. Your normal HVAC system consists of an air handler, a heat pump, or condenser as some people call it, and refrigeration tubing that connects the two. The air handler contains heating and cooling coils that are instrumental in generating hot or cold air that is then blown through the ductwork in your house and out through the air vents. I’m not an HVAC provider, so I don’t know exactly how the whole system works, but the basic idea is that the condenser or heat pump either draws heat or cold from the air outside and that, along with the heating or cooling coils in the air handler, generate the hot or cold air that provides your indoor air temperature control. It is kind of magical if you ask me how an HVAC device can create hot air from cold air in the wintertime and cold air from hot air in the summertime. I imagine we all take for granted the technological advances of the science behind heating and air conditioning. All most of us know is if our centralized A/C system fails, we simply call our HVAC contractor and leave it up to him to fix it. But I guess in our complex modern world we all have more important things to be concerned with!