The ECM Motor: How It Boosts Your HVAC System's Energy Efficiency
Today, many HVAC systems are no longer manufactured with the older Permanent Split Capacitor (PSC) motors, and instead use the new Electronically Commutated Motors, or ECMs. Motors are used in furnace fans, condensers, and air handlers, and HVAC systems with ECMs use less electricity and, therefore, get better energy savings.



Whether air is heated by your furnace, or cooled by your air conditioner, in most systems it passes through the furnace to cycle through the blower. The blower is the component that forces warm or cool air into your ducts, giving it the power to circulate throughout your house.
In the HVAC industry, the term "heat gain" is used to describe environmental conditions that raise the indoor temperature, thus forcing 


