Why is my bathroom exhaust fan not working?

A non-working bathroom exhaust fan is usually caused by electrical issues, a burned-out motor, or blockages in the ductwork. Start by checking if the fan is getting power, then inspect for physical obstructions or motor problems.

First, check the electrical connections. Make sure the wall switch is working by testing it with a voltage tester or trying a different electrical device in the same circuit. Check your home's electrical panel for any tripped breakers. If the fan has been working intermittently, loose wire connections at the switch or fan unit could be the culprit. Turn off power at the breaker before inspecting any electrical connections.

Motor failure is common in older exhaust fans. If the fan is getting power but not spinning, the motor may have seized or burned out. You might hear humming or clicking sounds when you flip the switch. Bathroom exhaust fans typically last 10-15 years with regular use, and motors can fail due to dust buildup, moisture damage, or normal wear. Sometimes the fan blades are simply stuck due to accumulated dust and debris.

Blocked ductwork can also prevent proper operation. In Ottawa's climate, ice buildup in exterior vents during winter months can block airflow and strain the motor. Check the exterior vent cap for obstructions like leaves, bird nests, or ice. Lint and dust can also accumulate in the ductwork over time, reducing efficiency and potentially causing the motor to overheat and shut down.

For safety reasons, electrical troubleshooting should be left to qualified professionals. Working with bathroom electrical systems requires knowledge of moisture-related safety codes and proper GFCI protection. If basic checks don't solve the problem, or if you're uncomfortable working with electrical components, contact a licensed electrician or renovation contractor.

Consider upgrading to a modern, energy-efficient exhaust fan if your current unit is over 10 years old. Newer models are quieter, more efficient, and often include features like humidity sensors or LED lighting. For a free consultation on bathroom ventilation upgrades, request a quote from Ottawa Bathrooms.