HVAC systems consume a lot of energy, and their use comprises much of a home's monthly energy consumption. Although they are necessary in many parts of the country, there are steps homeowners can take to improve their HVAC's energy efficiency

An inefficient HVAC will require more energy to run, and an HVAC costs the consumer more than any other appliance in the home, but replacing the unit could drop the energy bill down by 25-30% or even more