Fujian Diamond · Focused on fan production since 2007

HVLS ceiling fan turning above pallet racking in a chemical storage warehouse

HVLS Ceiling Fans From 2.4 m to 7.3 m

Direct-drive ceiling fans for buildings too tall for air conditioning to reach the floor.

2 products in this range

HVLS Ceiling Fan Products

High volume low speed means exactly what it says. A blade set between 2.4 m and 7.3 m across, turning slowly, moves a wide column of air to the floor and out along it. That column is what people feel, and it is why a building with a 9 m roof can be made comfortable without cooling the air above head height that nobody occupies.

The Problem

What Buyers Are Actually Trying to Fix

The complaint that brings most buyers to this category is the same: the air conditioning runs all day, the bill is enormous, and the floor is still hot. In a high-bay building the cooled air stratifies. Moving air instead of chilling it is a different and much cheaper mechanism, and in winter the same fans run slowly to bring roof-level warm air back down.

Who this range is for

  • Plant and facilities managers responsible for buildings above about 5 m clear height
  • Distribution and cold-chain operators where humidity damages stored goods
  • Gym, restaurant and retail operators whose customers leave when a room gets stuffy
  • Livestock producers where heat stress costs yield
  • Mechanical contractors and HVAC distributors specifying air movement into a project

Typical application scenarios

  • Warehouses and distribution centres with high racking and long aisles
  • Machining, stamping and assembly workshops, including buildings served by overhead cranes
  • Gyms, sports halls, canteens, supermarkets and transport waiting areas
  • Dairy barns, poultry sheds and pig units where the fans were first developed
Every figure on the product pages in this range comes from our own specification. Where a number depends on the diameter or the duty it is written as TBC and confirmed at quotation.
Core Advantages

Why This Range Is Built the Way It Is

1

IE5 permanent magnet direct drive

No reduction gearbox in either range, so there is no oil change and nothing to drip on the floor below. That is what the free-maintenance and 20-year service life figures rest on.

2

Coverage that changes the fan count

Up to 1,700 m2 from an industrial fan and around 330 m2 from a commercial fan. A building that would take dozens of drum fans usually takes a handful of these.

3

Under 38 dB

Both ranges run below 38 dB at the fan. Air is moved by blade area rather than by tip speed, and tip speed is what makes the noise.

4

Blades built like a wing

Aluminium magnesium alloy extruded and stretched, airfoil section, energy saving tail at the tip, T5 plus bright surface oxidation for corrosion resistance.

Related References

Buildings Using This Range

Vehicle service centre with HVLS ceiling fans above the two-post lift bays

Automotive Service Centre

Air movement at the working plane in the lift bays, a clear floor for vehicle handling, and portable units that can be rolled out...

Indoor sports hall with HVLS ceiling fans above a children's football session

Indoor Sports Hall

A hall that holds a usable temperature through the season with air movement rather than mechanical cooling, and a gym floor...

Questions

Questions About HVLS Ceiling Fans

Clear height decides it. Up to about 6 to 7 m the commercial fan at 2.4 m to 3.7 m is right, and it looks better in a public room. Above that, and wherever coverage per fan matters more than appearance, use the industrial range from 3 m to 7.3 m.

That depends on clear height, building shape, and what breaks up the space. Racking, cranes and partitions cut effective coverage. Send the dimensions and layout and we will return a fan count and positions rather than a floor-area division.

Yes, and that is where the heating saving comes from. Run at low speed, the fan destratifies: warm air trapped at the roof is mixed back to the floor instead of heating the roof structure.

Cement beams, I-beams and square steel structures are all standard. Where there is no roof structure above, a pole mount is available.

There is no gearbox and no lubrication schedule. Work is limited to cleaning the blades, checking the fixing and end cover screws, and inspecting the junction box wiring for loose or burnt terminals.

Get a HVLS Ceiling Fan Selection for Your Building

Send the building or the duty and the first reply comes back with a model, a count and a price rather than a brochure.