If you&#;ve heard friends or colleagues talk about HVLS fans, you&#;ve probably listened to them brag about how amazing they are.
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So what&#;s all the hype about? What is an HVLS fan? Who uses them? And where can you buy one?
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HVLS: High-Volume, Low-Speed
The best place to start when describing an HVLS fan is with its smaller cousin, the standard ceiling fan. In the United States alone, more than 80 million homes have at least one ceiling fan installed. People love them because they provide relief from hot weather for a fraction of the cost of air-conditioning.
While regular ceiling fans work great in small spaces like bedrooms or living rooms, they aren&#;t powerful enough to have much effect in a large space like a warehouse. Their relatively short blades and compact parts can circulate air up to roughly 75 to 200 square feet (7 to 19 square meters).
In the late s, some brilliant engineers innovated the design of the ceiling fan for use in larger&#;much larger&#;spaces. They called this new invention the HVLS fan&#;a high-volume, low-speed fan.
HVLS fan airfoils are much longer (anywhere from 8 feet to 30 feet in diameter). Although they rotate at a slower speed than standard ceiling fans, they&#;re capable of circulating a much higher volume of air upwards of 15,000 square feet (roughly 1,400 square meters).
Who Uses HVLS Fans
Since HVLS fans provide such impressive coverage, they tend to be used in large buildings such as warehouses, factory floors, gymnasiums, repair shops, and other industrial facilities.
In these types of environments, people inside are usually working or performing physically demanding tasks. When the weather gets hot, the inside of those buildings gets hot, too. And when it gets sweltering inside, work slows down. Body temperatures rise, brain activity slows, and productivity suffers.
Air-conditioning can help, but it&#;s also extremely expensive and uses an excessive amount of energy to operate. High-volume, low-speed fans, however, are able to circulate the air using far less energy. The breeze these fans create provides comfortable relief to the folks inside.
Companies that care about the well-being of their staff&#;while also needing to keep them productive&#;are primary users of HVLS fans.
Where to Buy HVLS Fans
HVLS fans have exploded in popularity all over the world. While there are several manufacturers producing these specialized fans, one company has become the industry leader: Big Ass Fans.
Big Ass Fans has been pioneering and perfecting HVLS fans for more than 20 years. We offer a range of fans that come with a range of options and features, including technological integration with HVAC, security, and fire suppression systems.
Which fan will work best in your building depends on a variety of factors such as building size, ceiling height, interior layout, and budget. The experts at Big Ass Fans can work with you to find the perfect airflow solution to bring sweet relief to your team.
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Facilities that have wide spaces and high ceilings may have difficulty with air circulation and temperature control. For facilities where moisture buildup interferes with processes or endangers products or livestock, continuously circulating air prevents bacteria and other contaminants from building up on surfaces. Good airflow also helps dry up moisture, even when in unheated spaces.
High volumes of people, equipment, or animals in the location will limit airflow, making it difficult for regular HVAC systems to maintain steady air temperatures. While standard floor fans may offer temporary relief at short distances, it will take many fans to adequately increase airflow within the room.
To remedy these issues, high-volume, low-speed (HVLS) fans provide air circulation and temperature control. Indventech distributes and integrates large, mechanical HVLS ceiling fans used in industrial, commercial, and agricultural facilities, as well as temporary structures. Our HVLS fans offer a wide range of air movement capabilities depending on the facility&#;s size and operational conditions.
The experts at Indventech have compiled this helpful guide to provide information about HVLS fans and help readers make informed purchasing decisions.
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High-volume, low speed fans come in very large sizes, from seven feet up to 24 feet, with operating speeds ranging from 61-220 rpm. These fans typically come in multiple horsepower (hp) options, including 5/8 hp, 3/4 hp, or 1 hp. Though large in size, HVLS fans are made from lightweight materials and can be conveniently installed permanently or temporarily depending on the application needs. While HVLS fans are typically ceiling-mounted, Indventech can also provide wall-mounted or standalone complimentary fan integrations, depending on the available space and other application-specific considerations.
Due to the larger fan size, HVLS fans don&#;t require high speeds to move air. The slower, steadier fan speed and longer fan props push large volumes of air from the ceiling and down to the floor level. The air moves horizontally until reaching a column or wall, which then projects airflow upward and sideways. When the air rises again, it is pushed down again by the HVLS fan, creating continuous airflow through the space.
This process is called evaporative cooling, which is the principle that explains why a person feels cooler in a breeze. The fan does not actually change the physical temperature of the air flowing down, but will naturally evaporate moisture generated by processes, from livestock, humid weather, or other sources. Humidity makes air feel warmer, so removing it from the air ultimately creates a more comfortable environment.
Commercial HVLS fans also work to evenly distribute warm air during the winter. When heating a building, there will be different temperature zones within a space localized near heating ducts and up near ceilings. Warm air rises while cold air falls, making it cooler near the floor level. An HVLS fan pushes the warm rising air back down and mixes it with the cooler air to create more evenly distributed temperature across the facility.
HVLS fans are ideal for operations that have equipment or obstacles that may impede proper airflow from a wall or floor fan. Since the fans are typically positioned along the ceiling, the air column circumvents equipment to reach people or livestock. HVLS fans facilitate increased comfort by evenly distributing temperatures in wintertime and making personnel feel cool in the summer without constantly adjusting HVAC equipment.
An HVLS fan also increases energy efficiency, since the fan has larger props to move more air without drawing more power to increase fan speed. The low-horsepower nature of HVLS fans ensures that a building won&#;t need to draw excess energy to power the equipment while still creating good airflow.
Additionally, HVLS fans promote better health and wellness. Controlling humidity and moisture can prevent bacteria buildup on wet surfaces. The constant air circulation helps to avoid condensation and dry up moisture, preventing unexpected slick floors. An HVLS fan may also be used to bring in fresh air into spaces that contain air pollutants, or to draw the pollutants from the space and out of the building.
Determining the right size and power for your commercial HVLS ceiling fan requires analyzing several building factors. To invest in the right HVLS fan for your facility, use the following criteria:
HVLS fans come with various processors, motors, and controllers, depending on the manufacturer and model. They may have direct drive motors, on-board processors, variable frequency drives (VFDs), and control interfaces. To determine which features you need on your fan, consider how you would like the fan to integrate into your broader HVAC system.
The size and number of fans will have an impact on how well airflow is distributed in your space. For reference, Indventech offers fans in sizes ranging from 7-24 feet, with coverage radii of 17-75 feet.
Consider the placement of the fans when dealing with equipment that could obstruct airflow. Ensure that obstructions will not fully block the column of air or redirect it to undesirable places.
Indventech is always available to discuss your HVLS fan needs or to offer advice on other air movement solutions, such as full-service ventilation and dust management.
Yes. An HVLS fan can remove moisture by controlling the humidity in the air. By circulating and redistributing the air, the air doesn&#;t become saturated by moisture. The HVLS fan may also prevent unwanted air temperature differentials that can cause humidity.
Light strobing happens when light dims and brightens with the movement of the fan blades when shining through the fan&#;s pathway. This effect may cause dizziness or disorient some people. To prevent this issue, increase vertical distance or maximize horizontal separation between the fan blades and the light source. Try to minimize light and fan overlap when possible.
At Indventech, we offer fans in various sizes, operating speeds, and horsepower levels to suit a broad array of commercial, industrial, and agricultural use cases. If you are looking for an HVLS fan in the southeast United States, request a quote today to get started on the next air movement solution.
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