AT A GLANCE
What does HVLS mean?
HVLS stands for High Volume Low Speed. An HVLS fan uses large blades rotating relatively slowly to move a high volume of air across a wide area.
How large are AirMax fans?
The AirMax range is available in four published diameters: 4.0 m, 5.0 m, 6.0 m and 7.3 m.
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How much area can one AirMax cover?
Published approximate coverage ranges from 800 m² for AirMax 400 to 2,325 m² for AirMax 730. Actual coverage depends on mounting height, building layout, structure and obstructions.
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How high can an AirMax be installed?
The published approximate installation-height range is 5–24 metres. Final mounting height must be determined as part of the project specification.
Can AirMax be used in winter?
Yes. AirMax can operate slowly for destratification, helping redistribute warm air trapped near roof level towards the occupied area.
Does AirMax require three-phase power?
The current published specifications show 200–480 V, three-phase, 50/60 Hz across all four AirMax models.
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Maximum Airflow. Maximum Coverage. Minimum Running Costs.
AirMax INDUSTRIAL HVLS FANS
AirMax is MegaFan’s industrial High Volume Low Speed fan range, engineered for large buildings with high ceilings and extensive open floor areas.
Available in four diameters from 4.0 metres to 7.3 metres, AirMax moves large volumes of air slowly and efficiently across warehouses, factories, distribution centres, sports facilities and agricultural buildings.
The range combines wide-area airflow with efficient year-round operation, helping improve comfort during warmer conditions and redistribute trapped warm air through winter destratification.
- Move huge volumes of air across large open spaces
- Cover more area with fewer fans
- Low-energy gearless motor technology
- Built for demanding industrial environments
- Improve summer comfort across occupied areas
- Redistribute trapped warm air during winter
Selecting AirMax Is More Than Choosing the Largest Model
A suitable AirMax system should account for the building, structure, occupied areas, services and control requirements before fan positions are confirmed.
Engineered Airflow Across the Entire Space
The 7.3 m AirMax 730 is designed to draw air from above the fan and drive a large volume of air down towards floor level, where it spreads outwards across the building.
The airflow pattern shown demonstrates how air velocity remains measurable well beyond the fan itself, helping create broad, consistent circulation rather than concentrating airflow directly underneath the blades.
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4.19 m/s — Outflow air speed at approximately 3.05 m from the fan centre
2.64 m/s — At approximately 6.10 m
1.42 m/s — At approximately 12.19 m
0.76 m/s — Still measurable at approximately 30.48 m
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This wide airflow pattern helps AirMax circulate air throughout large warehouses, factories, agricultural buildings and other high-volume spaces.
Measured example: AirMax 730, 7.3 m diameter. Air speeds shown are averages and actual performance may vary depending on installation and site conditions.
Ready to Find the Right AirMax System for Your Building?
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Tell us about your building, airflow requirements and the areas you want to improve. Our team can help recommend the right fan size, quantity, positioning and control solution for your site.
Fan Sizes
AirMax is available in four fan diameters. The correct model depends on the required airflow, coverage, mounting height, building geometry, structure and surrounding obstructions.
From Simple Local Control to Smart Building Automation
AirMax can be controlled using a choice of MegaFan controller platforms, from straightforward local speed control through to multi-fan management and intelligent automated operation.
Basic Controller
A straightforward local controller for a single compatible AirMax fan where simple manual operation is required.
- Fan on and off control
- Manual variable-speed adjustment
- Simple local operation
- Suitable for straightforward single-fan systems
Controller 6
A digital control platform for installations that require centralised management of multiple compatible AirMax fans.
- Control up to six compatible fans
- Individual fan selection
- Variable-speed control
- Forward and reverse operation
- Live fan-speed information
- RS-485 Modbus communication
Smart HVLS Controller
Intelligent automated control for larger AirMax installations, allowing fan operation to respond to building conditions, temperatures and schedules.
- Automatic summer cooling
- Automatic winter destratification
- High and low temperature monitoring
- Weekly occupancy scheduling
- BMS and Modbus integration
- Fire-alarm shutdown input
- Fault reporting and service monitoring
See What Your Airflow Investment Could Save
Use our ROI Calculator to estimate potential energy savings, running-cost reductions and payback based on your building and current heating or cooling requirements. It gives you a quick indication of the financial case for upgrading your airflow system before speaking with our team.
AIRMAX FAQ's
What does HVLS mean?
HVLS stands for High Volume Low Speed. An HVLS fan uses large blades rotating relatively slowly to move a high volume of air across a wide area.
How large are AirMax fans?
The AirMax range is available in four published diameters: 4.0 m, 5.0 m, 6.0 m and 7.3 m.
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How much area can one AirMax cover?
Published approximate coverage ranges from 800 m² for AirMax 400 to 2,325 m² for AirMax 730. Actual coverage depends on mounting height, building layout, structure and obstructions.
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How high can an AirMax be installed?
The published approximate installation-height range is 5–24 metres. Final mounting height must be determined as part of the project specification.
Can AirMax be used in winter?
Yes. AirMax can operate slowly for destratification, helping redistribute warm air trapped near roof level towards the occupied area.
Does AirMax require three-phase power?
The current published specifications show 200–480 V, three-phase, 50/60 Hz across all four AirMax models.
Is AirMax suitable for dusty environments?
AirMax is IP65 rated, subject to correct installation and use.
How noisy is AirMax?
Published sound levels range from 52–54 dB(A) depending on the model. Actual perceived sound will also depend on the building and operating conditions.
Can AirMax be supplied in another colour?
The AirMax material includes optional powder-coated finishes. The required colour/RAL reference should be confirmed, when the system is quoted.Â
Can AirMax connect to a BMS?
Yes, through compatible MegaFan control options. Controller choice, communication method and BMS configuration should be confirmed during specification.