How to Replace a Commercial Kitchen Exhaust Fan Motor

How to Replace a Commercial Kitchen Exhaust Fan Motor


Replacing a commercial kitchen exhaust fan motor is an important maintenance task that helps keep your kitchen ventilation system running properly. As the fan motor starts to wear out over time, it can reduce airflow, increase noise levels, and eventually fail completely. By learning how to replace the motor yourself, you can avoid costly repairs and keep your kitchen exhaust system operating at peak performance. In this guide, I will walk through the complete process of replacing a commercial kitchen exhaust fan motor step-by-step.

Reasons to Replace a Commercial Kitchen Exhaust Fan Motor

Here are some common signs that it may be time to replace the exhaust fan motor in your commercial kitchen:

Replacing the motor before total failure occurs helps prevent disruption to kitchen operations during peak hours.

Choosing a Replacement Exhaust Fan Motor

When selecting a new exhaust fan motor, you need to match:

Also consider getting a motor with sealed bearings and thermal overload protection for maximum longevity. Contact the exhaust hood manufacturer if unsure of exact replacement needs.

Tools and Materials Needed

Before starting this project, make sure you have the necessary tools and replacement parts:

You may also need conduit fittings, wire nuts and crimp connectors depending on wiring setup.

Safety Precautions

When working with electrical motors and commercial kitchen ventilation systems, safety should always be the top concern:

Follow all local and national electrical codes for commercial kitchens to ensure safety.

Step-by-Step Motor Replacement

Once you are fully prepared, follow these steps to replace the exhaust fan motor:

Turn Off Power

Remove Fan Blades

Disconnect Wiring

Remove Motor Mounting

Install New Motor

Connect New Wiring

Reattach Fan Blades

Restore Power and Test

Following proper safety precautions and these steps will allow you to get your commercial kitchen exhaust fan running like new again with a replaced motor. Be sure to inspect the fan blades and mounting bracket while doing this repair to replace any other worn parts as needed. Taking care of small issues before they become big problems will extend the life of your ventilation equipment.

When to Call a Professional

In some cases, it is best to have a licensed electrician or HVAC technician take care of the exhaust fan motor replacement:

Hiring a professional can often get the job done faster and ensure everything is up to code. But replacing a standard single phase exhaust fan motor is a DIY project an experienced handyman can usually tackle. Follow proper safety procedures and you can save on maintenance costs.


Regularly replacing worn commercial kitchen exhaust fan motors is essential for keeping your ventilation system running properly. Learning how to spot signs of a failing motor, choosing the right replacement model, taking proper safety precautions, and following the step-by-step installation process will allow you to complete this repair DIY. Or know when it makes sense to call in an electrical contractor. Proper ventilation keeps your kitchen operating safely and efficiently.