page contents
Home » Commercial Ventilation » Big Ass Fans

Considering a Big Ass Fan? Will it actually help you stay cool?


Big Ass Fans fill a gap in the market that many commercial fans cannot. They build incredibly big fans—no, seriously. They’re big. These HVLS (High-Volume, Low-Speed) fans are able to move huge quantities of air with minimal energy cost.

Big Ass Fans are fantastic for moving air—but are they good for cooling your home or business?

 The aptly-named Big Ass Fans can range from 2.4 metres to 4.3 metres in diameter (for their Essence range), providing a wide circumference of airflow. This is most useful for maximizing air distribution from HVAC (heating/ventilation/air conditioning) systems or to generate air movement in large commercial spaces that don’t have an alternative way of bringing air in from outside.

However, Bigass Fans don’t bring in fresh, cooler ambient air from the outside. Depending on what you need from a ventilation system, simply moving the same air around over and over inside a commercial space may not be the cooling effect you are after. The only cooling effect obtained by moving air around this way is a perceived effect for people who are working directly underneath the fan. The air passing around them will feel more comfortable. However, moving air around does not lower the temperature in the space.

So, what exactly does a Bigass Fan do?

A Bigass Fan operates like a more powerful roof fan. It circulates and evenly distributed the air within a room or space. That means that the indoor temperature will be the same everywhere in the room. In colder winter months, this ensures that any rising heat that gathers in the roof space is pushed back down into the living or working space. In summer, it evenly distributes the cooler indoor air.

Bigass Fans do not actively lower the temperature in a room. This is because the fan doesn’t actively push air out through openings like windows or roller doors. It does, however, circulate great quantities of airflow which helps to make workers or homeowners more comfortable.

Big Ass Fans suit both commercial and residential properties.

Big Ass Fan Pros:

1)    Wide Range

Big Ass Fans offer a large range of fans for both domestic and commercial properties. These range from their ‘Haiku’ range of domestic fans to their ‘Essence’ or ‘Powerfoil’ industrial fans.

2)    Stylish Look

Big Ass Fans have a slim, minimalist look. You are also able to customize the colour of your fan to match the commercial property it is installed in.

3)    Great Airflow

Big Ass Fans move great quantities of air quietly, and effectively.

4)    Quiet Operation

Bigass Fans are well-known for their quiet operation, in part thanks to their direct-drive motors.

Big Ass Fan Cons:

1)    Does Not Lower Indoor Temperature

A Bigass Fan can create a refreshing breeze, but it won’t actively lower interior temperatures. It can help move air-conditioned air through a workspace, but it won’t extract heat directly.

2)    Steep Price per Unit

Some Bigass Fans Australia models can easily exceed $1,000.00 (AUD), while commercial Bigass Fans can be as much as $3729.00 (USD). Though their performance is strong, the initial price can be intimidating.

big ass fans - an illustration of how it works
wind vector background

Solar Whiz

A Solar Whiz commercial roof ventilator is designed to be magnitudes more powerful than a roof fan. It serves as an elegant alternative to a roof whirlybird. It doesn’t operate like a Big Ass Fan. It is a bit like comparing apples to oranges.

A Solar Whiz extracts hot air and replaces it with fresh, cooler ambient air from outside. This allows interior spaces such as roof cavities, factories, warehouses, indoor sports facilities (etc.) to maintain close to the ambient temperature with the outside temperature. This can be done without relying on expensive installation and running costs for air-conditioning.

Our units are also proudly designed and manufactured in Australia. Solar Whiz is specifically designed to perform at the highest level in the harsh Australian climate.

A Solar Whiz is not ideal to run alongside air-conditioning, because it can actively extract that cool air out (depending on the installation). But it can create a soft breeze as it draws air through air intakes, helping workers feel cooler & in turn increasing productivity. Give us a call to see if Solar Whiz can help you increase the efficiency and cut the running costs of your air conditioning system!


Solar Whiz Pros:

1)    Market-Leading Airflow

Solar Whiz has been providing Australian & international markets with market-leading airflow for solar ventilators since 2009. We’ve serviced thousands of Australian homes with residential ventilators. Our growing commercial range has been sought out to cool a large variety of business schools and halls in the sizzling Aussie summers. Our SW-AU-C-10000 or SW-AU-C-7000 units have, time and time again, made people in work and leisure environments cooler and more comfortable. You can check out some case studies here!

2)    Cooling Capacity

Solar Whiz units flush hot air out of localised spaces, using cooler, fresher air from outside. Heat builds up heat quickly in warehouses or factories that have large amounts of metal walls & roofing. A solar heat extractor like Solar Whiz removes hot air from rooms or roof spaces before it begins to build up and helps prevent excessive heat loads on the building.

3)    Flexible Installation & Accessories

Solar Whiz can be installed with a night operations/constant current kit that lets you run the unit after daylight hours. All you need to do is flick a power switch. We also offer options for controlling the temperature at which Solar Whiz starts operating. Our passionate team is well-practiced in creating powerful and effective solutions for businesses with unique ventilation problems.

4)    Cost Effective & Efficient Operation

Solar Whiz operates completely free of charge when the installation isn’t using night operations/constant current modules to assist your units. They’ll run when the sun is out—which is when you experience the hottest and most uncomfortable work and leisure conditions. If you pair it with night operations, this requires minimal amounts of electricity to run at full capacity. You’ll notice the difference in both comfort and cooling costs with a Solar Whiz.

Solar Whiz Cons:

1)    Doesn’t (Necessarily) Benefit HVAC Systems

Unless you’re using roof-space extraction methods, direct extraction from interior spaces can hinder cooling provided by HVAC or air-conditioning systems. The best use for Solar Whiz is to remove heat from large, hot spaces. This would be your home’s roof space or your warehouse/factory interior. This prevents heat-build from radiating through your ceiling.

Do I buy a Big Ass Fan? Or do I buy a Solar Whiz?

This depends on what you want out of your ventilation system. Bigass Fans might be for you if you want better overall airflow inside your property or evenly-distributed temperatures throughout a home or business. If you want to extract heat as soon as it begins to build up, Solar Whiz is the better option.

Also, consider installation cost as this can be very high for Bigass Fans systems due to the size and vibration of these very large units.


See which one works for you. Shop around, and get opinions! If you’d like to get an obligation-free quote, head over to our forms page to find a quote for you.

Frequently Asked Questions

What are Big Ass Fans and how do they work?

Big Ass Fans are large, energy-efficient ceiling fans that are designed to create a comfortable and healthy indoor environment. They use a slow-moving, high-volume airflow to circulate air and create a cooling effect in hot and humid spaces.

How do Big Ass Fans differ from traditional ceiling fans?

Big Ass Fans differ from traditional ceiling fans in size, power, and performance. They are much larger and more powerful, and they can circulate air more effectively and efficiently, even in large commercial or industrial spaces.

Do big ass fans cool a room?

They don’t actually lower the indoor temperature but can create a cooling effect through wind chill. This increases sweat evaporation, making you feel cooler.

How much are big ass fans?

Purchasing a single fan can cost you between $795 (1.3m Haiku L Ceiling Fan) to $3,495 (i6 in Brushed Aluminium).

Why are big ass fans so expensive?

Big ass fans are expensive because of their size, complexity in the installation process, and their powered motors that require a lot of energy to operate.

SW commercial button

SW domestic range

dealer network button