How often should I clean my furnace blower?

Author: Wilfredo Kuvalis  |  Last update: Saturday, March 1, 2025

How often should you clean your furnace blower? Generally, it's recommended to clean it at least once a year. However, if you notice signs of reduced airflow, unusual noises, or increased dust, more frequent cleaning may be necessary.

Is furnace blower cleaning necessary?

Most blower wheels need to be pulled and cleaned every 3-5 years, depending on usage and the home. A dirty blower wheel can negatively affect the airflow in your HVAC unit, causing your heat exchanger to overheat and AC coils to freeze. It will also reduce the efficiency of your blower motor and your entire system.

How often should you clean a furnace fan?

Step 3: Clean the Blower Motor And Fan

Every two months, you should remove the cover and clean the blower motor and fan with a vacuum or compressed air.

How much does it cost to clean a furnace blower?

The average furnace cleaning cost is about $150, although prices often range from around $70 to $400, depending on the type of furnace, size of the furnace system, and where the furnace is located in your home.

What happens if you don't clean your furnace?

Dirt accumulation inside the furnace might result in an overworking system. This causes the furnace to use more energy while heating your home less effectively. This might lead to system failure, and you will require a new furnace installation in this case.

Yearly Furnace Cleaning And Maintenance Pro Tips

How much does a furnace cleaning cost?

The cost of furnace cleaning can vary depending on several factors, but on average, it ranges from $60 to $400. While this might seem like a wide range, the final price will depend on things like the size of the furnace, its condition, and the specific services included in the cleaning.

How do I know if my furnace needs cleaning?

Signs It's Time To Schedule a Furnace Cleaning
  1. High energy bills.
  2. Reduced heating efficiency.
  3. Unusual noises/frequent cycling.
  4. Funny smells.
  5. Increased allergies or respiratory issues.
  6. Dirt, debris, or clogged filters.
  7. Yellow furnace pilot light flame.

How long should a furnace cleaning take?

On average, furnace cleaning and tune-up services last just one to two hours. During these appointments, our technicians inspect all interior and exterior furnace components, calibrate thermostats, and inspect and clean furnace venting systems. We also: Inspect heat exchangers for build-ups, blockages, and cracks.

How do you clean a furnace blower?

Using a toothbrush or paintbrush, you can clean between the fan blades, motor housing, and the entire unit itself. Additionally, a vacuum will be good to keep the dust down and suck up any clump of grime that gets left behind.

What's the difference between furnace cleaning and duct cleaning?

Regular duct cleaning can improve indoor air quality and prevent the buildup of harmful substances in the ducts. Furnace cleaning, on the other hand, refers to the cleaning and maintenance of the furnace itself. This includes tasks such as cleaning the burners, checking the blower motor, and replacing the air filter.

Can I run my furnace fan all day?

Pros of Running Your Furnace Fan Continuously

This helps eliminate cold spots in your home and provides a more comfortable living environment. Enhanced Air Filtration: Continuous fan operation means your furnace's air filter works 24/7.

How to clean a blower motor without removing it?

Use the brush attachment of your vacuum cleaner to scrub out any remaining grime. If your vacuum cleaner does not have a brush attachment, use a small, curved brush to clean out the hard-to-reach areas of your blower wheel, as well as the blower motor, and the fan blades.

How do you know if your furnace ducts need to be cleaned?

If you see dust and dirt both inside and outside — especially by the vents that blow cool air out — your ducts most likely need to be cleaned. To prevent future dust buildup, make sure you replace your HVAC system air filters frequently. You can also run an air purifier.

Should you vacuum your furnace?

Vacuum out the combustion chamber to remove traces of dirt and soot from the burners and surrounding areas. Wipe the entire interior clean with a cloth to remove any lingering dirt, dust, and soot. Replace the metal access panel and secure it tightly with the removed screws. Restore gas and power to the furnace.

What happens if the blower wheel is dirty?

Having a dirty blower wheel will make your HVAC system work harder and, if not addressed, eventually cause your AC system to stop working. A dirty blower wheel will also contribute to a high electric bill.

How do I know if I need a new furnace blower?

10 Signs That Your Furnace Needs a New Blower Motor
  1. No Airflow From Your Vents. ...
  2. Higher Energy Bills. ...
  3. Strange Noises When Your Furnace Ignites. ...
  4. Strange Smells. ...
  5. The Blower Stops Working After You Turn On Your Furnace. ...
  6. Constant Thermostat Adjustments. ...
  7. There Is Cold Air Coming From Your Furnace. ...
  8. Your Furnace Doesn't Ignite.

How often should a furnace blower be cleaned?

How Often Should You Clean Your Furnace & Ducts. We usually advise that you schedule furnace maintenance every 1-2 years (ideally once a year) and duct cleaning at intervals of 3 to 5 years for a smooth-running system and excellent indoor air quality. That's the minimum.

What is the life expectancy of a furnace blower motor?

Furnace: A blower motor in a furnace can last a minimum of 10 years but up to 20 if you schedule regular maintenance to keep your unit in good condition. Heat Pump: Like a furnace, a blower motor in a heat pump can last at least 10 years, and up to 15 if the unit undergoes regular maintenance.

How do I clean my furnace myself?

8 Steps to Follow When You Clean a Furnace
  1. Deactivate the Power & Gas. The first step in cleaning your furnace is safety. ...
  2. Clean the Outside. ...
  3. Wash the Blower Motor. ...
  4. Clean the Heat Exchanger. ...
  5. Check the Air Filter. ...
  6. Inspect & Clean the Flame Sensor. ...
  7. Check the Drive Belt Tension. ...
  8. Lubricate.

What is the charge for furnace cleaning?

Furnace Cleaning and Inspection Cost

Most homeowners pay in the range of $100-$300 for furnace inspection and cleaning. If you want to get your duct cleaned, be prepared to pay an extra $250-$500. Homeowners who just want to get their furnace inspected without a tuneup or cleaning, usually pay between $50 and $100.

What happens if furnace is not cleaned?

Not cleaning your furnace can have major negative impacts on you and your family! All of that particulate matter that your furnace attracts gets distributed through the air in your home, meaning poor indoor air quality that can irritate asthma and allergies.

How often should you drain your furnace?

For optimal performance and efficiency, your furnace's condensate line should be drained every three to six months to prevent buildup.

Is it worth getting your furnace cleaned?

One of the most significant benefits of annual cleaning is better furnace efficiency. When the furnace boiler and ducts are cleaned, the furnace will run at better rates and not need to run as long to provide heat for a home. A furnace with better efficiency can save you money in the long run.

What are the drawbacks of duct cleaning?

Cons:
  • It's Not a Permanent Solution: Air duct cleaning is not a permanent solution to the problems in your ductwork. ...
  • It Can Be Expensive: Air duct cleaning can be expensive, especially if you have a large home with multiple ductwork systems. ...
  • It's a Mess: Air duct cleaning can be a messy process.

What does a dirty furnace look like?

A dirty furnace filter is discolored. It's gray or brown instead of its original white or light color. You'll notice a thick layer of dust, dirt, and debris covering the filter's surface. The filter may look clogged or matted, with visible clumps of dust and hair.

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