Low noise extractor fans

Types of low noise extractor fans

Low noise extractor fans are designed to operate less robustly, providing quieter ventilation than standard models. Manufacturers achieve this result by using noise-pollution-reduction technologies, like brushless motors and noise-dampening bearings. The design of low-noise extractor fans also aims to provide a quieter operational experience through bladed impeller geometry, airflow optimization, streamlined casing design, and other technologies that reduce aerodynamics and mechanical noise. The goal is to provide effective ventilation in residential areas, workplaces, libraries, hospitals, and other places that demand quiet operation without sacrificing efficiency.

• axial fan: The axial low-noise extractor fan uses a motor-driven propeller to extract the air parallel to the fan's axis. This type of fan is suitable for places that need to extract a large amount of air. Manufacturers design it to provide a quieter operation. The blades' angle, the material, and the speed of rotation are adjusted to give strong air circulation with low noise.
• centrifugal fan: Unlike axial low-noise extractor fans, centrifugal low-noise extractor fans extract air in parallel perpendicular to the axis. The working principle is to suck the air in first and then extract it. The design is to blow the air sideways through the impeller that rotates at high speed. Centrifugal fans are usually located in the duct and are more suitable for large space and long-distance air extraction.
• mixed flow fan: The new Mixed-flow low-noise extractor fans combine the features of axial and centrifugal low-noise extractor fans. They have an axial arrangement and a centrifugal impeller. The extraction of air happens through the rotation of an impeller with a centrifugal layout. Mixed-flow low-noise extractor fans have the advantages of both types, providing efficient air movement in a compact size. It has a relatively small casing, light weight, and low noise level.
• blowroom fan: The blowroom extractor fan is a kind of centrifugal fan. Its impeller design is special, creating a way of two currents inside the casing. It has radial blades, giving it a smaller size. Blowroom extractor fans are suitable for short-distance air extraction.

Specification and Maintenance

Specifications of low noise bathroom extractor fan vary among different manufacturers. The crucial ones are as follows:

• Flow Rate: The flow rate of an extractor fan shows the volume of air the fan can extract from a room in a minute. It is measured in cubic meters per minute (m3/min) or liters per second. The typical flow rate of extractor fans ranges from 1.5 to 12 m3/min.
• Noise Level: The primary purpose of a low-noise extractor fan is to lower the noise level. Hence, noise level is a vital specification. It is measured in decibels (dB). Some extractor fans have noise levels as low as 25 dBs, while others are up to 70 dBs.
• Power Consumption: Power consumption is another critical specification. It is usually shown in watts (W) on the product. Power consumption of extractor fans typically ranges from 5 to 40 watts, depending on the size and power of the motor.
• Dimensions: The dimensions of an extractor fan affect its installation and application. Generally, the width and length range from 100mm to 200mm. The depth of the fan varies according to the design. For example, a domestic wall extractor fan with a compact design has a depth of 80mm.
• Air Pressure: Air pressure refers to the extraction force of the extractor fan. It is measured in pascals (Pa). A higher air pressure shows that the fan has more extraction force. Air pressure for extractor fans typically ranges from 50 to 300 pascals.

Maintaining a low noise extractor fan is essential for keeping it in a good working condition and prolonging its lifespan. Regular maintenance helps to prevent breakages and reduces the need for frequent replacements. Here are some maintenance tips and practices for keeping it in great shape:

• Cleaning: The most crucial maintenance practice is keeping the fan clean. Regular wiping and vacuuming can keep away dirt, dust, and debris. Users may opt to disassemble the fan parts for thorough cleaning.
• Avoid Painting Over the Fan: Painting over an extractor fan can clog its vents. As a result, the ventilation system will be compromised. Also, the paint may affect the performance of the motor. Therefore, the airflow and noise levels may increase. If one wishes to improve the appearance of the fan, there are safe methods to do so without affecting its integrity.
• Periodic Professional Services: While DIY maintenance works are okay, some tasks are better left to professionals. They have the tools, expertise, and experience to do the job right. They can assess the performance of the extractor fan and determine its condition. Additionally, they can identify underlying issues that may require attention.

Usage scenarios of low noise extractor fans

Low noise ventilation fans are suitable for use in several application areas that require ventilation with less noise. Some of the following usage scenarios impact people's daily lives.

• Bathroom:

  In the bathroom, a low-noise extractor fan can remove excess moisture from the air to prevent mold growth on the walls and other bathroom surfaces. It also creates a comfortable space by eliminating odors and keeping the room fresh.

• Restroom:

  Similar to the application in the bathroom, a low-noise fan placed in the restroom helps users to quickly eliminate unpleasant odors. Also, its ventilation feature reduces the risk of moisture-related issues, and users can achieve a cleaner and fresher environment.

• Kitchen:

  A kitchen generates cooking smells and smoke, as well as excess humidity from cooking. A low noise kitchen extractor fan helps to eliminate all these quickly and quietly. It also helps to prevent the buildup of carbon monoxide when users are cooking with gas.

• Bedrooms:

  In the bedroom, a vent fan integrated into the room can help to improve sleep quality by reducing air pollution and ensuring users breathe fresh air. It can also reduce noise and distraction while ensuring a peaceful and quiet space.

• Rooms:

  For homes or offices working in rooms with a lot of electronic equipment that generate a lot of heat, a low-noise extractor fan can help to dissipate that heat and maintain a suitable temperature. In addition, in small spaces where users have less control over the ventilation systems, a low-noise fan may provide the necessary ventilation with minimal noise pollution.

• Indoor grow tent:

  The low-noise fan is suitable for the grow tents to provide the necessary air exchange to support plant growth while controlling temperature and humidity. Using a vent fan in grow tents ensures that crops have sufficient carbon dioxide and prevents diseases and pests by reducing humidity.

• Greenhouse:

  Fans provide a suitable growing environment for plants by regulating temperature and humidity levels. Greenhouse ventilation systems reduce the risk of plant diseases by improving air circulation and ensuring adequate gas exchange.

• Industrial workshop:

  Industrial workshops may use low-noise extractor fans to provide workers with a more comfortable working environment by balancing the temperature and humidity. While the industrial workshop may be a relatively noisy place, low-noise extractor fans can reduce the overall noise level and minimize its impact on workers' health.

How to Choose Low noise extractor fans

When shopping for low noisy bathroom extractor fans for resale, buyers should consider various factors to stock models that will meet their target market's needs. First, buyers should analyze their target customers and what rooms they intend to use the fans. For instance, if intending to sell fans for use in bathrooms, buyers should look for devices with features designed for that particular room. Such features include humidity, moisture, and odor detection and the ability to work silently to avoid disturbing household members.

Buyers should also choose extractor fan models with more than one speed setting. Such fans give users the option to select their preferred speed depending on the level of ventilation a particular room needs. Also, buyers should get energy-efficient fans. Such models have energy-saving features like speed control, which allows the device to run at the optimum speed required for effective ventilation. Additionally, energy-efficient extractor fans may have programmable timers and humidity and occupancy sensors that enable the fan to operate only when necessary, saving a lot of energy in the long run.

Evaluate the build quality of the extractor fan models and the warranty period offered alongside them. For ease of installation and long-lasting services, retailers should stock fans made of robust materials like nylon, which can withstand high pressure and long system operations. Furthermore, a long warranty period provides customers with confidence in the product's quality and performance.

Since the ultimate goal is to make a profit, buyers should compare fan models' prices, specifications, and features. They should settle on models with competitive prices but high performance. Taking advantage of volume discounts and negotiating for better prices with the supplier can help to maximize profit margins when selling the products.

Q and A

Q: What is the purpose of an extractor fan?

A: An extractor fan moves the air in a particular space or room by removing or suck in stale air and replacing it with fresh outdoor air. It is ideal for places like kitchens and bathrooms where there tends to be a lot of humidity.

Q: How does an extractor fan work?

A: An extractor fan has a motor-driven fan that works by creating a pressure difference in the room, thereby drawing out air from the room. The air is then replaced by fresh air from another location.

Q: What does CFM mean in an extractor fan?

A: CFM means Cubic Feet Per Minute and is a method of measuring the volume of airflow. In the case of an extractor fan, it measures the amount of air that is moved or extracted every minute. The higher the CFM in a fan, the more air it moves.

Q: What is the decibel of an extractor fan?

A: The decibel (dB) level of an extractor fan indicates the level of noise it will make when in use. A small and simple extractor fan will have a dB level of between 20 to 25. More powerful extractor fans like kitchen extractors will have a dB level ranging from 80 to 90.