Title: Everything You Need to Know About Furnace Blower Motors

Meta Description: Discover the ultimate guide to furnace blower motors – from diagnosing issues to maintenance tips for a warm, cozy home.

Slug: everything-you-need-to-know-about-furnace-blower-motors

Everything You Need to Know About Furnace Blower Motors

Imagine it’s a cold winter morning in Vancouver, and you wake up shivering because your furnace isn’t working. Don’t worry; we’ve got you covered!

One of the most crucial parts of your furnace is the blower motor. It’s like the heart of your heating system, pumping warm air through your home. When it stops working, your comfort goes out the window!

In this guide, we’ll explain everything you need to know about furnace blower motors, including:

Furnace Blower Motors – What is it?

A furnace blower motor is the heart and soul of your home’s heating system. It pushes the warm air generated by your furnace through the ductwork and into your living spaces. Without a working blower motor, your furnace would just be an inefficient box.

How Does a Blower Motor Work?

The blower motor is located in your furnace. When your thermostat signals the need for heat, the furnace heats up the heat exchanger. The blower motor then starts, drawing cool air from your home through the return ducts and pushing it over the hot heat exchanger. The now-warm air is then forced through the supply ducts and out the vents, warming your home.

Types of Furnace Blower Motors

There are two main types of furnace blower motors:

  1. PSC (Permanent Split Capacitor) Motors: These are traditional blower motors. They run at a constant speed and are less energy-efficient than ECM motors.
  2. ECM (Electronically Commutated Motor) Motors: These are more advanced and energy-efficient. They can adjust their speed based on your home’s heating needs, resulting in more even temperatures and lower energy bills.

Advantages of ECM motors over PSC motors include:

Signs of a Failing Furnace Blower Motor

Recognizing the signs of a failing blower motor can help you fix it before it completely breaks down. Here are some signs to watch for:

1. Unusual Noises

If you hear any of the following noises from your furnace, it could be a problem with the blower motor:

2. Weak or No Airflow

If the airflow from your vents is weaker than usual or non-existent, it could be a sign that your blower motor is struggling. This can lead to uneven heating and cold spots in your home.

3. Furnace Overheating

If your furnace is frequently overheating and shutting down, it may be due to a malfunctioning blower motor. When the motor isn’t pushing enough air over the heat exchanger, the furnace can overheat and trigger the safety shut-off.

4. Higher Energy Bills

A failing blower motor can cause your furnace to work harder, leading to increased energy consumption and higher utility bills. If you notice a sudden spike in your heating costs, it’s worth checking your blower motor.

Causes of Furnace Blower Motor Failure

Several factors can contribute to the failure of your furnace blower motor:

  1. Normal Wear and Tear: Over time, the motor’s components, such as bearings and brushes, can wear out.
  2. Overheating: Not replacing dirty air filters can cause the motor to overheat and burn out prematurely.
  3. Electrical Issues: Power surges, loose wiring, or a failing capacitor can all damage the blower motor.
  4. Moisture Damage: Leaks or excessive condensation can introduce moisture into the motor, causing corrosion.

Fun Fact: Did you know that the average lifespan of a furnace blower motor is 10-20 years? With proper maintenance, you can help your motor reach the upper end of that range!

Troubleshooting Furnace Blower Motor Issues

Before calling a professional, try these simple troubleshooting steps:

  1. Check the Thermostat: Make sure your thermostat is set to “heat” and that the temperature is higher than the current room temperature.
  2. Inspect and Replace Air Filters: A dirty air filter can restrict airflow and cause the blower motor to work harder. Replace your filters regularly (every 1-3 months).
  3. Check for Blocked or Closed Vents: Ensure all your vents are open and unobstructed. Blocking vents can strain the blower motor.
  4. Call a Professional: If these steps don’t resolve the issue, it’s time to call an HVAC technician.

Replacing a Furnace Blower Motor

If your blower motor is beyond repair, replacement is the next step. Here’s what you need to know:

Determining if Replacement is Necessary

An HVAC technician can help you decide if replacement is the best option. They’ll consider the age of your motor, the extent of the damage, and the cost of repairs vs. replacement.

Factors Affecting Replacement Cost

The cost of replacing your furnace blower motor can vary based on several factors:

  1. Type of Motor: ECM motors are generally more expensive than PSC motors.
  2. Brand and Model: The make and model of your furnace can impact the cost of a replacement motor.
  3. Labor Costs: Labor costs can vary depending on the complexity of the job and rates in your area.

On average, you can expect to pay between $400 and $1,500 for a blower motor replacement in Vancouver.

Importance of Hiring a Qualified HVAC Technician

Replacing a furnace blower motor is not a DIY job. It requires specialized knowledge and tools. Hiring a qualified HVAC technician, like those at AireEnergy, ensures your new motor will be installed correctly.

Maintenance Tips to Extend Furnace Blower Motor Life

Regular maintenance is key to extending the life of your furnace blower motor. Here are some tips:

  1. Replace Air Filters Regularly: Clean filters ensure proper airflow and prevent the motor from overworking.
  2. Schedule Annual Tune-Ups: A professional HVAC technician can inspect, clean, and lubricate your blower motor during an annual maintenance visit.
  3. Keep Vents and Registers Clean: Regularly vacuum your vents and registers to remove dust and debris.
  4. Maintain Proper Humidity Levels: High humidity can lead to moisture damage. Use a dehumidifier to keep humidity levels in check.

Pro Tip: Set a reminder in your calendar to replace your air filters and schedule your annual furnace tune-up. This will help you stay on top of maintenance and avoid costly repairs down the road.

Energy Efficiency and Furnace Blower Motors

Upgrading to a more energy-efficient furnace blower motor can improve your home’s comfort and save you money.

ECM Motors and Energy Savings

ECM motors are the most energy-efficient option, using up to 75% less electricity than traditional PSC motors. They can also adjust their speed based on your home’s heating needs, resulting in more even temperatures and less wasted energy.

ENERGY STAR Certified Furnaces

Look for furnaces with the ENERGY STAR label. These furnaces often feature ECM blower motors and can save you hundreds of dollars on your annual heating costs.

Rebates and Incentives in Vancouver

Upgrading to an energy-efficient furnace can make you eligible for various rebates and incentives in Vancouver:

  1. CleanBC Better Homes and Home Renovation Rebate Program: Offers rebates of up to $3,000 for installing a high-efficiency furnace.
  2. FortisBC Rebates: Provides rebates of up to $1,000 for upgrading to an eligible high-efficiency furnace.

AireEnergy can help you navigate these rebate programs and maximize your savings when upgrading your furnace and blower motor.

Frequently Asked Questions

1. How long do furnace blower motors typically last?

The average lifespan of a furnace blower motor is 10-20 years, depending on factors such as usage, maintenance, and environment.

2. Can a blower motor be repaired instead of replaced?

In some cases, minor issues like a worn-out capacitor or loose wiring can be repaired. However, if the motor itself is damaged, replacement is often the most cost-effective solution.

3. Is it worth upgrading to an ECM blower motor?

If your furnace is compatible with an ECM motor, upgrading can lead to significant energy savings and improved home comfort. The initial cost may be higher, but the long-term benefits can make it a worthwhile investment.

4. How often should I have my furnace and blower motor serviced?

It’s recommended to have your furnace and blower motor professionally inspected and maintained at least once a year, ideally before the start of the heating season.


Your furnace blower motor may be small, but it plays a big role in keeping your home warm and comfortable. By understanding how it works, recognizing signs of trouble, and following proper maintenance practices, you can keep your blower motor in great shape for years to come.

When it comes to complex furnace issues, it’s best to leave it to the professionals. The team at AireEnergy is here to help with all your furnace needs, from routine maintenance to emergency repairs and energy-efficient upgrades.

So, the next time you feel that warm air flowing from your vents, take a moment to appreciate the hard work of your furnace blower motor – the unsung hero of your home’s heating system.