According to the National Air Duct Cleaners Association, up to 40 pounds of dust is created annually in a typical 6 room home. Through normal occupation we generate a great deal of contaminants and air pollutants such as dander, dust & chemicals. These pollutants are pulled into the HVAC system & recirculated 5-7 times per day. Overtime, this recirculation causes a build up of contaminants in your duct work which results in your system having to work harder to maintain temperature. In fact, the U.S. Department of Energy says that 25-40% of energy used for heating & cooling a home is wasted. When your HVAC system is clean, it doesn't have to work as hard which means less energy is used, saving you money. If indoor air quality is improved, you can breathe easier knowing you've removed contaminants & allergens and made your home as safe as possible for your family. That's something no one can put a price on!