In order for an HVAC system to function properly, there are two important things to keep in mind. First, it must have all the parts and components needed. And secondly, each of these parts and components has to fulfill its particular purpose. Because of the very many parts and components that comprise an HVAC system, there are some of them that are easily overlooked — even though they are just as important as the others. A perfect example of this is the insulation foam.
