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High Volume Low Speed Fan FAQs

Fan FAQs

High-Volume Low-Speed Fan FAQs

What is an HVLS fan? How is it different from a traditional fan?

HVLS stands for high-volume, low-speed… 

…meaning that the fan moves much more air than a traditional fan, while rotating fewer times in a similar period, improving the overall efficiency of the ventilation achieved. Another big factor that separates HVLS fans from normal fans is the size of their blades (or airfoils). HVLS fans have longer blades so that they can generate large convections of air that travel farther and affect a greater area than traditional fans. This enables HVLS fans to thoroughly circulate the air in commercial and industrial applications that have large open areas like warehouses, hangars, sports arenas, terminal concourses, etc.

Let us know if you’d like to LEARN MORE about our amazing fans.

How much does an EnergyLogic MacroAir fan cost? Why doesn’t EnergyLogic show pricing?

We want you to get the best deal on the system that’s right for you... 

EnergyLogic has a knowledgeable and growing network of dealers and technicians throughout the United States and in select international locations. EnergyLogic MacroAir HVLS fans are also available by special order at most major US auto-parts stores.

Each HVLS-fan configuration is a unique opportunity to ensure that you get the most value for your investment. With custom application engineering layouts and AirViz fluid-dynamic visualizations, EnergyLogic works to ensure an optimized, efficient solution for your facility’s indoor air quality, comfort, and productivity.

Rather than post prices for a product that may not be tailored to you or your local guidelines, we make sure that you get help from an experienced dealer representative to get your system just right!

CONTACT US right now and we’ll connect you with an expert in your area.

What is evaporative cooling and how does it protect my inventory and make my space more comfortable and productive?

The answer to this one is no sweat

…actually, it is sweat! Evaporative cooling takes advantage of water’s capability to remove energy (heat) as it changes from liquid to vapor and moves from one place to another. This is why we sweat to cool off and animals that don’t sweat find other sources of moisture to achieve evaporative cooling.

HVLS fans are so effective at moving air and equalizing temperature and humidity in a space, they can make the air feel up to 8 degrees cooler just by keeping humid, stagnant air from collecting around occupants. This, in turn, lets the occupants feel more comfortable and at ease with the task they are engaged in.

Balancing temperature and humidity can also keep condensation from collecting and causing slippery conditions or ruining stored items.

Learn more about the many benefits of HVLS fans HERE.

What is destratification and how can a fan make my space warmer in winter?

Hot air rises, right?...

…So, the air close to your ceiling can be surprisingly warmer than the air near your floor, and you! Worse, once heat gets trapped near your ceilings, it can stagnate and be hard to circulate back into the rest of the air in your space. And, since heat loss is faster when the difference in temperature is greater, energy is more quickly lost from hotter air near the ceiling. So, you don’t get to enjoy that heat AND you’re using more energy to keep your space warm.

By running your HVLS fan in reverse, air is pushed away from the ceilings, down the wall, and across the floor to evenly distribute air temperatures, without creating any chilling breeze.

Learn more about the year-round benefits of HVLS fans HERE.

How much money can an HVLS fan save me?

TONS! Starting with your HVAC…

Big fans can make almost any commercial or industrial indoor climate more comfortable and efficient just by letting you ease off on the thermostat because the air is moving and more evenly distributed. This alone can save up to 20% on your energy bills.

And, if HVLS fans are incorporated into the design of the space huge savings can be made in HVAC equipment sizing, duct-material usage (or elimination thereof), and the associated labor. Not only will this reduce the cost of your design, but the savings in materials and increase in efficiency can earn you LEED POINTS.

CONTACT US today and let EnergyLogic help engineer the perfect application for you.

We have moisture issues in our building… Will these fans help?


Humidity and moisture distribution are core strengths of high-volume, low-speed fans. Even with powerful HVAC and dehumidification systems, avoiding mildew, stagnation, and condensation can be challenging. HVLS fans are ideal for maintaining the circulation necessary to avoid the temperature differentials that cause the condensation and moisture stagnation that lead to SWEATY SLAB SYNDROME and poor INDOOR AIR QUALITY.

What makes EnergyLogic’s MacroAir fans different from other leading big fans?

EnergyLogic is the largest distributor of HVLS fans and offers the original MacroAir: inventors of the HVLS fan. Our combined experience and support offer you a world-class service and experience. Pair that with competitive pricing and the BEST WARRANTY, and you get personalized care with EnergyLogic’s commitment to your satisfaction… that’s hard to beat.

What size / model HVLS fan do I need for my space?

Well, that depends…

EnergyLogic offers VARIOUS MODELS of HVLS fans that cover from 900 square feet up to 14000 square feet each and can be mixed and matched to cover spaces of all shapes and sizes, large and small. There can be many factors in selecting the system that’s just right for your application. Let us lend our knowledge and experience to your project by CONTACTING US today.

What are the differences between the different fan models?

However you use your space, we’ve got a fan meant for you.

Our fan models range in style from the rugged Y Series and Z Series to sleek X Series and AirVolutionD and in capability from simple, knob controls to fully integrated building-automation-system ready.

See how our products are used in different INDUSTRIES to get an idea for yourself.

What maintenance does an HVLS fan need?

You’ve got better things to worry about…

EnergyLogic’s MacroAir fans only require an annual visual inspection and the occasional blade wiping, if significant dust or grime begins to collect.

Of course, if you notice any damage or malfunction, do not operate the fan, refer to your product manual, and CONTACT US ensure the issue is corrected before resuming use of the fan.

Can I install my HVLS fan myself?


Many happy EnergyLogic-fan owners have taken the DIY approach to installation. It is important, however, to carefully refer to the guidelines and clearances in the manual to ensure that your product’s installation meets the conditions to preserve the manufacturer’s warranty… and if at any point you decide to turn it over to an expert, our DEALER NETWORK is standing by.

What is EnergyLogic’s warranty?

EnergyLogic stands by their product and is committed to offering the highest quality. That’s why we partnered with the HVLS-fan manufacturer with the BEST WARRANTY.