When Do You Need Air Duct Cleaning in Minnesota?

St-Paul-MN-Metro-Heating-and-Cooling-VanThe efficiency of your heating and air conditioning system relies on a closed building envelope.

Modern homes have an airtight seal, keeping energy from leaking out.

However, sealing in heating and cooling energy also means reduces the inflow of outside air. Therefore, dust, mold, bacteria and other contaminants can become trapped.

Over time, your air ducts become dirty. Accordingly, many customers ask, “When do I need air duct cleaning in Minnesota?

The U.S. Department of Environmental Protection states:

“If, after a visual inspection of the inside of the ducts, you see no indication that your air ducts are contaminated with large deposits of dust or mold (no musty odor or visible mold growth), having your air ducts cleaned is probably unnecessary. It is normal for the return registers to get dusty as dust-laden air is pulled through the grate.”

Consequently, it is normal for air ducts to always look a bit dirty.

So, when do you need air duct cleaning in Minnesota?

The first indication may come if family members begin having unusual or unexplained illnesses or symptoms.

Your home is a closed system, and pollutants and contaminants do build over time. It is important to inspect air ducts. If they are not easily accessible, call a heating and cooling professional.

You will need air duct cleaning if you discover:

  • A musty odor or visible mold growth
  • An insect or rodent infestation
  • Clogged ducts
  • Visible dust coming from supply registers

However, beware – air duct cleaning is not a do-it-yourself project.

Improper cleaning can damage or loosen the air ducts which will drastically reduce heating and cooling efficiency and increase energy costs.


Metro Heating and Cooling’s team of 25 employees have over 160 years of experience. Moreover, our honesty and integrity earned us an A+ rating with the Better Business Bureau.

If you would like a trusted evaluation to determine if you need an air duct cleaning in Minnesota, or need more information, please contact us at (651) 294-7798 today.

We cover Blaine, Bloomington, Brooklyn Park, Eagan, Edina, Hastings, Maplewood, Minneapolis, Minnetonka, Roseville, North Saint Paul, Saint Paul, Saint Paul Park, South Saint Paul, Stillwater, West Lakeland, West Saint Paul, White Bear Lake, Woodbury, and many more locations.

Can’t find your town listed? Contact us at (651) 294-7798 to tell us where you live, so we can help you.