HVLS Fans Myths

GreenMango Solutions HVLS fans

About HVLS fan technology:

It’s expensive.

It’s heavy.

It’s ineffective.

The physics behind the technology isn’t complex. It’s just about air movement. How the air is moved is the real science.

Since the electric fan was invented years ago by Schuyler Skaats Wheeler, people have been able to rely on fans for relief from the summer heat. The early technology was simple: Rapidly spinning blades produced a high-velocity current of air. The air-activated the body’s natural cooling system by facilitating the evaporation of perspiration from the skin’s surface. This phenomenon made the direct beneficiary of the airflow cooler and more comfortable than the air temperature would indicate

For the most part, the science of air movement has not come very far since then. Most fans manufactured for personal comfort in the 21st century, available at the local big-box store or through industrial suppliers, operate using substantially the same principles as Wheeler’s first appliance.

HVLS fans are ceiling-mounted and vertical in design, and they range in size from 6 to 24-feet in diameter. Patented, aerodynamically-designed airfoils and small,energy-efficient motors allow HVLS fans to move huge volumes of air (more than 360000 cfm) very slowly (less than 60 rpm) over very large areas (up to 30,000 square feet). By comparison, according to industry test data, a 48-inch high-velocity box fan likely also uses a 1-hp motor, but it generates just 7% as much air volume as a standard model HVLS fan and it has to move five times as fast as an HVLS fan to do it!

By moving a lot of air very slowly, the HVLS fan creates quiet, less disruptive airflow and makes for highly energy-efficient fans.

The gentle airflow created by HVLS technology is ideally suited to manufacturing and warehousing facilities. Workers feel cooler and happier about their working conditions; management can keep productivity and morale high while minimizing energy costs.

Although HVLS technology has been eagerly adopted by satisfied facility managers all over the world, some skepticism remains. Here are some answers to common HVLS fan myths.

HVLS Fans Myth 1: Step away from a fan and you lose its effect

HVLS fans use immense size, not speed, to move large volumes of air sizable spaces. The slow moving airfoils generate a downward flowing column of air equal to the fan’s diameter that projects outward when it hits the floor. A single HVLS fan can cover up to 30,000 square feet.

HVLS Fans Myth 2: A fan that big must be an energy hog

HVLS fans take advantage of aerodynamic principles keeps them running in the most efficient manner possible. Design features such as hollow aluminum blades and air-capturing wiglets maximize air movement while only requiring 1 or 2 hp motor.

HVLS Fans Myth 3: A fan that big must weigh a ton.

The weight of the fan depends upon its size and design. Many fans don’t require any extra ceiling support.

HVLS Fans Myth 4: Fans are loud and disruptive, kicking up dust and stirring around papers.

Air-conditioning systems are generally much, much noisier than HVLS fans. And while some dust and dirt may be tossed into the air when it’s first turned on, the environment stabilizes as the fans run, leaving only refreshing breeze.

HVLS Fans Myth 5: Fans just push hot air around.

hvls fans myths St Vincent Ferrer Parish Samal

In hot weather, fans are operated at the upper range of speed to circulate the air within a facility. In cold weather, the fans run at slow speeds to push warmer air down to the floor without producing a wind chill.

HVLS Fans Myth 6: I can get the same results with smaller fans

An average 3-foot industrial fans produces less noise while cooling more people.

HVLS Fans Myth 7: Low speed equals one speed

Many HVLS fans come standard with a variable frequency drive to control speed.

HVLS Fans Myth 8: Not much benefit using HVLS fans

Customers report many unexpected benefits using HVLS fans, including reduced condensation and mold issues, elimination of slippery floors and packaging that retains its integrity because of reduced humidity.

HVLS Fans Myth 9: Sustainability isn’t cheap.

Some of the most significant benefits users of HVLS fans have realized have had measurable impact on their bottom line. There benefits have been realized in two major areas: improvements in employee productivity and energy savings.

In the winter, cold damp work spaces also adversely impact worker output. In the summer, HVLS fans generate gentle breezes within entire facility, cooling workers, improving air quality, and most importantly keeping people on the job. In the winter, destratifying, or thoroughly mixing, air in the facility mean that air from heaters and operations does not become trapped at ceiling level, and cold spots on the floor are eliminated. This improves production by improving the work environment.

Facility energy savings with HVLS fans can be realized year-round. In the winter, thermostats can be lowered because workers will be more comfortable at lower settings when the fans are operating. In some situations, certain heating equipment can be deactivated because the facility will stay warm enough without it. In air-conditioned facilities, the cooling effect of the fans’ gentle air movement allows users to raise their thermostats without loss of worker comfort, and equipment not needed to achieve cooling via a “blower effect” can be turned off (or, in the case of expensive ductwork, eliminated from a building’s design.




Zephyr is the premium 5-blade HVLS fan series that is designed for superior wind speed performance and efficiency that leads to high energy savings. Zephyr is powered by a new revolutionary Permanent Magnet Synchronous Motor. Zephyr comes in three sizes 18 ft, 20ft and 24 ft. Zephyr is the choice for bigger spaces with higher ventilation requirements. Similar to Vento, Zephyr is perfect for sports, recreation, entertainment, traffic hubs, commercial and even industrial uses. Read More >>>

HVLS Fans Myths 1

Vento is simple 5-blade HVLS fans that comes in two sizes, 22 and 16 feet. Vento is best for commercial spaces that demands comfort and wind speed. It’s suited for sports (fitness clubs, gym/athletic training stadium), recreation & entertainment (amusement park, zoos, children’s playground), traffic hubs (airport, railway station, and bus station), commercial place ( shops, restOS, supermarkets), others (warehouses, factories, museums, and outdoor venues). Read More >>>

HVLS Fans Myths 2

Brisa is an 8-blade 14-ft HVLS fan with seamed edge design with fluorocarbon paint technology. The fan blade tail is meteor-inspired that when the fan is turned on the tail will result in a gorgeously beautiful silhouette. The unique middle cover hides the intersection of the shell and fan blade, making the design even more luxurious adaptive to all design and structures. Brisa is perfect for small sports paces and commercial such as restaurant and small to medium retail centers . Read More >>>

HVLS Fans Myths 3

Gale is specifically designed like an umbrella where fans and ACs can’t be installed on ceilings. Gale can be installed with billboards, lightings, fences or even benches. Read More >>>

HVLS Fans Myths 4

Gust is a a large fan with air volume comparable to 20 units of industrial fans. Gale fans can be installed on tight or complicated places including walls, beams and posts. Read More >>>

HVLS Fans Myths 5

Xana is a 2 meter movable fan that has 4 wheels with a durable steel frame. Xana can be moved anywhere despite its size. Its strong durable frame is rust and water proof. Read More >>>

HVLS Fans Myths 6

Kaze fan series is especially made for residential purposes. Kaze fan makes you feel the natural breeze right at our own home. It’s perfect for comfortable homes for families. Read More >>>

Frequently Asked Questions

Here are the features and specifications of all GreenMango HVLS Fans. Compare our industrial, commercial and residential HVLS fans to check what fits your specification. 

HVLS Fans Myths 7

Absolutely. We will install everything and teach you how to operate our products and a few troubleshooting tips. We need to inspect though the site where the installation will occur. 

You should. We are open for discussions. We’ll grant huge discounts for more volume purchases. 

We haven’t received any complaint yet about our installations and products. That itself speak for themselves.  In fact, our clients when we started are still with us. In fact, we are commissioned as the provider for ventilation solutions of the 51st International Eucharistic Congress held last 2016 in Cebu Philippines. Since we have installed on many churches in the Philippines, it comes naturally that we were recommended to offer ventilation solutions for the said event. 

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