Extractor fans are commonly used in kitchens, bathrooms, and other areas where excess moisture or unpleasant odors can cause inconvenience or harm. These fans are designed to extract air from a confined space and expel it outside, creating a fresh and healthy environment for the users. However, not all extractor fans are created equal, and there are two main types of extractor fans that you need to be aware of before investing in one.
1. Axial Extractor Fan
The first type of extractor fan is the axial extractor fan. This fan features a simple design that relies on a spinning blade to move air from one area to another. The blade is housed within a cylindrical casing and is driven by a motor located at the center. The casing usually has a grille on one end and a mounting flange on the other, making it easy to install in a wall or ceiling.
Axial extractor fans are ideal for small to medium-sized rooms and are quite efficient at removing moisture and odors. They are also relatively affordable and easy to replace when they wear out. However, axial extractor fans can be quite noisy when operating at high speeds, which can be a concern for some users. They also tend to have lower airflow rates compared to the second type of extractor fan.
2. Centrifugal Extractor Fan
The second type of extractor fan is the centrifugal extractor fan. This fan features a more complex design that consists of a scroll-shaped housing and a rotating impeller. The impeller has a series of backward-curved blades that accelerate the air towards the outer edge of the housing, creating a high-pressure zone that forces the air out through the exhaust.
Centrifugal extractor fans are ideal for large rooms or areas that require high airflow rates. They are much quieter than axial extractor fans thanks to their optimized airflow design and the use of sound dampening materials. They are also more energy-efficient and can be used with longer duct runs without losing their performance. However, centrifugal extractor fans are more expensive than axial extractor fans and require professional installation due to their more intricate design.
Which Type of Extractor Fan is Right for You?
Deciding which type of extractor fan is right for your needs depends on several factors, including the room size, ventilation requirements, noise sensitivity, and your budget. If you have a small to medium-sized room and are looking for a cost-effective solution, an axial extractor fan may be your best choice. However, if you require high airflow rates, quiet operation, and energy-efficient performance, a centrifugal extractor fan may be a better fit.
Additionally, you will need to consider the features and specifications of each fan, such as the motor type, fan diameter, airflow rate, and noise level. You may also want to look for additional features such as adjustable speed controls, humidity sensors, and smart connectivity options that can help you customize the fan’s operation to your specific needs.
Conclusion
Extractor fans are essential devices that can help maintain a healthy and comfortable indoor environment in your home or workplace. Knowing the differences between the two main types of extractor fans, axial and centrifugal, can help you make an informed purchasing decision that meets your specific needs and budget. Always choose a reputable brand and professional installation service to ensure that your extractor fan operates efficiently and safely.
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Frequently Asked Questions About The 2 Types Of Extractor Fan
What Are The 2 Types Of Extractor Fan?
There are generally two types of extractor fans: axial fans and centrifugal fans.
What Is The Difference Between Axial Fans And Centrifugal Fans?
The main difference between axial fans and centrifugal fans is the direction of the airflow. Axial fans move air parallel to the shaft or axis of the fan, while centrifugal fans move air perpendicular to the shaft or axis of the fan.
Which Type Of Extractor Fan Is Better?
The choice between axial fans and centrifugal fans depends on the specific use case. Axial fans are better suited for situations where high airflow rate is required at low pressure, such as ventilation in residential homes. On the other hand, centrifugal fans are better suited for applications that require high pressure at low airflow rate, such as industrial ventilation systems.
Can I Use Either Type Of Extractor Fan For My Bathroom?
Yes, both axial fans and centrifugal fans can be used for bathroom ventilation. However, the specific type of fan that is best suited for your bathroom will depend on various factors such as the bathroom size, ventilation needs, and the layout of your bathroom. It is recommended to consult an HVAC professional to determine the best type of extractor fan for your bathroom.
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