High Volume Low Speed (HVLS) Fans

Introduction to HVLS Fans

HVLS fans are engineered to provide a high level of comfort, efficiency, and productivity in large and public buildings in all seasons.  HVLS fans work to decrease the burden on HVAC systems and reduce the costs of heating and cooling. They also work in destratification as a means of energy efficiency.

A high-volume low-speed (HVLS) fan, unlike its smaller residential counterpart, is a mechanical fan with a diameter greater than 1.5m that moves large volumes of air at a low rotational speed.

Walter Boyd invented the HVLS fan during the 1990s to address the needs of the dairy farming industry because when dairy cows experience heat stress, they become sluggish and their milk production goes down. HVLS technology provided an energy-efficient way to keep dairy cows comfortable. And, just like humans, farm animals that are breathing in pollutants can develop health issues. These health and productivity problems, in turn, pose a threat to a farm’s bottom line. HVLS fans cool the cows and help boost their milk output while also circulating air to reduce risk of disease.

Big Fan in restaurant

How do High Volume Low Speed (HVLS) fans work

HVLS Technology HVLS fans are designed based on the laws of physics and aerodynamics and incorporate airfoil technology to provide greater efficiency. They move air consistently and evenly, but slowly, throughout a space because a high velocity of wind indoors is both unpleasant and inefficient, even in warm or hot climates. Read more here

Image of airflow circulation

HVLS Technology

HVLS fans are engineered using the laws of physics and aerodynamics and incorporate airfoil technology to provide greater efficiency. They slowly move air consistently and evenly throughout a space, creating a comfortable and cooling breeze.

The large column of air produced by an HVLS fan travels much farther than that of a smaller generically designed high speed fan. When this downward column of air hits the floor, it moves horizontally in all directions, away from the column, covering a huge area, thereby having capacity to cool multiple people effectively and efficiently.

The PMSM motor technology combined with the aerodynamically pitched blade ensure the fan is quiet and efficient.  This technology also allows a long life with no motor maintenance required – a massive cost and time saving benefit to you.

Brushless direct drive motor

What is destratification?

When heat is introduced into a space, it forms temperature layers, or strata. The warmest air is at the ceiling; the coolest is at the floor, where people work.  HVLS fans circulate the air so effectively that it mixes the air, removing these air pockets and creating a consistent temperature.  Start saving money on your winter powerbill by making your heating system work 30% more efficiently!

How does the air circulate?

Jet Black Fans have an engineered pitch on the blade to create a huge amount of air distribution with the least amount of energy.  The air moves at wind speeds of approx 3.5 meters per second, creating an effective cooling area of up to 1000m2 with just one fan!  The more open the space, the better the air moves.

Download Our Full Range Catalogue

Big Ceiling Fan showing guy wires

HVLS Catalogue
2021

Information sheets on our HVLS fan range

Downloadable Spec Sheets & Manuals

Industrial HVLS Ceiling Fan Spec Sheets (4.9m - 7.3m Diameter)

Industrial HVLS Ceiling Fan Install Manual

Commercial HVLS Ceiling Fan Spec Sheets (2.4m - 4.2m Diameter)

Commercial HVLS Ceiling Fan Install Manual

Freestanding Pole Fan Spec Sheets (Airpole)

Portable HVLS Fans Spec Sheets (Airmove)

Wall Mounted HVLS Fan Spec Sheets (Aifree)


Get in Touch

027 699 4049

Vanessa Craig

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Sales Team