Replace Draft Inducer Motor For Furnace

How to Replace a Flow Inducer Fan Motor in a Gas Furnace Practical
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Replace Draft Inducer Motor for Furnace


In this article, we will discuss the process of replacing the draft inducer motor for a furnace. A draft inducer motor plays a crucial role in ensuring the proper functioning of a furnace by venting out harmful gases and maintaining the right air pressure within the system. Over time, these motors might wear out or malfunction, requiring replacement. We will guide you through the steps involved in this process.

Step 1: Safety Precautions

Prior to starting any work on your furnace, it is essential to prioritize safety. Ensure that the power supply to the furnace is switched off and the circuit breaker is turned off. Moreover, wear protective gear such as gloves and safety glasses to prevent any injuries while working.

Step 2: Identify the Motor

Locate the draft inducer motor within your furnace system. It is typically positioned near the burner assembly or the flue pipe. Make sure to consult the furnace’s manual or seek professional guidance if you are unsure about the motor’s location.

Step 3: Disconnect Power

Before proceeding with the replacement, disconnect the power supply to the furnace. This step is crucial to prevent any electrical accidents during the process.

Step 4: Remove the Old Motor

Start by removing the screws or bolts securing the draft inducer motor in place. Carefully detach any wires connected to the motor, ensuring that you remember their positions for reinstallation. Once all connections are loosened, gently pull out the old motor from its housing.

Step 5: Check for Compatibility

Before purchasing a new draft inducer motor, ensure that it is compatible with your furnace model. Check for the motor’s specifications and compare them with the old motor to avoid any compatibility issues.

Step 6: Install the New Motor

Position the new draft inducer motor in the housing, aligning it with the screw holes or mounting brackets. Reconnect the wires to their respective terminals, referring to the notes you made during the removal process. Secure the motor in place using the screws or bolts.

Step 7: Test the Motor

Once the new motor is installed, reconnect the power supply to the furnace and turn on the circuit breaker. Switch on the furnace and observe the motor’s operation. Ensure that it is running smoothly and that there are no unusual noises or vibrations.

Step 8: Final Checks

Double-check all the connections and wiring to ensure everything is properly secured. Inspect the motor housing for any gaps or leaks that might affect the furnace’s performance. Additionally, ensure that the motor is properly aligned with the other furnace components.

Step 9: Maintenance Tips

To prolong the lifespan of your draft inducer motor, regular maintenance is crucial. Clean the motor and its surrounding area periodically to prevent the accumulation of dust and debris. Additionally, lubricate any moving parts as recommended by the manufacturer.


Replacing a draft inducer motor for a furnace is a task that can be accomplished with the right knowledge and precautions. By following the steps outlined in this article, you can ensure the smooth functioning of your furnace and maintain a comfortable living environment. If you are unsure about any aspect of the process, it is always advisable to seek professional assistance.