When selecting a powerful bathroom extractor fan, the key factor to consider is the Airflow (m³/h), which indicates how much air the fan can move within an hour. The diameter of the ducting (which is the pipe that connects to the back of the fan, and passes through to the external wall or ceiling) is also crucial, as a larger diameter allows more air to pass through.

For instance, a 150mm diameter is more effective than a 100mm diameter. At eFans, we offer a range of high-power bathroom extractor fans with an Airflow of 150 m³/h or higher, all carefully selected by our product specialists to keep your bathroom fresh and clean.

What Defines a Strong and Powerful Bathroom Fan?


An Airflow of 150 m³/h is generally considered quite powerful for a bathroom fan. All the fans on this page meet or exceed this specification. 

Upgrading to a Stronger Bathroom Fan


Yes, you can upgrade to a stronger bathroom fan. However, you must ensure that the new fan matches the diameter of your existing ducting. A 100mm tube will not fit a 150mm fan and vice versa. If you prefer, you can replace your current tube with a wider one to accommodate a more powerful fan. Alternatively, look for a fan with the same diameter but a higher airflow by checking the product specifications.

Factors Affecting the Power of a Bathroom Fan

Several factors determine the power of a bathroom fan:
  1. Size and Speed of the Fan: Larger and faster fans can produce more airflow, making them more powerful.
  2. Motor Power: The energy the motor can use to move air affects the fan’s strength. Higher motor power means a stronger fan.
  3. Diameter of the Ducting: Larger ducting can carry more airflow, enhancing the fan’s overall power.


Frequently Asked Questions


1. What is the ideal Airflow for a powerful bathroom extractor fan?
An Airflow of 150 m³/h is generally considered quite powerful for a bathroom fan.

2. Can I replace my current bathroom fan with a more powerful one?
Yes, you can upgrade to a stronger bathroom fan. Ensure the new fan matches the diameter of your existing ducting. 

3. How do I know if a bathroom fan will fit my existing ducting?
Check the diameter of your current ducting and compare it with the specifications of the new fan. A 100mm ducting will not fit a 150mm fan and vice versa.

4. What factors affect the power of a bathroom fan?
The size and speed of the fan, motor power, and diameter of the tube all play significant roles in determining the fan’s power.

5. Are the bathroom fans at eFans compliant with standard safety regulations?
Yes, all the bathroom fans available at eFans meet standard safety regulations and have been carefully selected by our ventilation experts.

6. How often should I replace or upgrade my bathroom extractor fan?
It depends on usage and maintenance. Regularly check your fan’s performance and consider upgrading if you notice decreased efficiency or increased noise levels.

If you have any more questions, feel free to contact us at hello@efans.co.uk

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