Most homeowners have no idea what goes on inside their home's air ducts. But the fact is, they can become littered with years of accumulated dirt, debris and allergens like pollen, dust and pet dander.

Industry standards recommend that you have your air ducts inspected every 2 years for cleanliness, and have them cleaned, on average, every 5-7 years. Of course, this will vary with the conditions in your home.

By having your air ducts cleaned regularly, you’ll help improve the indoor air quality in your home, and enhance the efficiency of your heating/cooling system, which may reduce energy bills.

Evergreen State Heat & AC offers a thorough duct cleaning with some of the industries most advanced technology. Average prices for duct cleaning ranges between $200-$600 depending on the size of your heating system and/or the number of heating registers.

Key indicators that your home is in need of a thorough duct cleaning would be if:

• There is substantial visible mold growth inside hard surface (e.g., sheet metal) ducts or on other components of your heating and cooling system.
• The home recently underwent remodel or improvements that create extra dust.
• Ducts are clogged with excessive amounts of dust and debris and/or particles are actually released into the home from your supply registers.

If any of the conditions identified above exists, it usually suggests one or more underlying causes. Prior to any cleaning, retrofitting, or replacing of your ducts, the cause or causes must be corrected or else the problem will likely recur.

Read more about Indoor Air Quality