HVLS Large Ceiling Fans — DC Energy Saving / AS Series

Usually three to four. 20,000 sq ft is about 1,860 m². A 24 ft fan covers up to 1,200 m² and a 20 ft fan about 900 m², so two 24 ft fans cover it on paper — but coverage assumes an unobstructed floor. Racking, mezzanines and partition walls break the airflow column, so in a racked warehouse we normally specify three or four smaller fans rather than two large ones, placed so their air columns overlap. Send us the floor plan and the clear height and we will mark the positions.

Speed and column size. A wall or pedestal fan throws a narrow, fast jet that is uncomfortable close up and gone ten metres away, and it only stirs the air already in the building. An HVLS fan turns slowly and pushes a wide, slow column down to the floor, where it spreads outwards in every direction. One 24 ft fan does the work of 10 to 20 high-speed fans, on 1.5 kW instead of 8 to 12 kW, and without the noise that makes a shop floor tiring.

Below 7 metres we would rather tell you honestly than sell you the wrong thing. The air column needs height to develop, so under a 5 m roof a large fan gives less coverage than the chart suggests and can feel draughty directly beneath it. At 5 to 6.5 m an 8 ft or 12 ft fan still works well. Below about 4.5 m the better answer is usually our Model 1500 mobile fan or wall-mounted air movement, and we will say so.

Yes, and this is where they earn their keep. Evaporative cooling struggles in the humidity of Dhaka, Chittagong or coastal Vietnam, but air movement does not depend on humidity at all — moving air lifts sweat off the skin and the effective temperature drops 3 to 5 °C regardless of how damp the air is. In sewing floors and finishing halls an HVLS fan also keeps the air from going stagnant over the lines without blowing fabric around, which a high-speed fan cannot manage.

A 24 ft AS Series fan weighs roughly 95 kg and is designed to mount to a primary structural member — a main truss, a portal frame rafter or a dedicated steel beam — never to purlins or to roof sheeting alone. Every fan ships with its mounting hardware and redundant safety cables. We supply the mounting load figures and fixing drawing with the quotation so your structural engineer can sign it off before the fan arrives.

Take a 24 ft fan at 1.5 kW running 10 hours a day for 300 days: that is 4,500 units a year. At ₹8 per unit it is about ₹36,000, and most sites run at part speed for much of the year so the real figure is lower. The comparison that matters is what it replaces — 15 high-speed fans at 0.75 kW each would draw 11.25 kW for the same floor, roughly seven times the energy.

Yes. We ship to the Gulf, the UK and Europe, East and West Africa, and South-East Asia. Each consignment carries the CE declaration of conformity, IEC, LVD and EMC certificates, the technical file, test reports, certificate of origin, commercial invoice and packing list. Fans are built at the destination voltage and frequency, blades travel flat in crates, and we quote EXW, FOB, CIF or CFR against your nominated port.

HVLS stands for High Volume, Low Speed. These are large-diameter ceiling fans (8 ft to 24 ft) that move very large volumes of air at low rotational speed, producing a gentle, wide, floor-level breeze instead of the turbulent jet of a small high-speed fan.

From 200 m² on the 8 ft Ayzair-8 up to 1,200 m² on the 24 ft Ayzair-24, based on a typical 7–9 m ceiling height. Actual coverage varies with room geometry and obstructions.

A minimum ceiling height of 7 metres is recommended so the airflow column has room to develop and spread across the floor.

Between 800 W and 1,500 W depending on diameter — a fraction of the 10 to 20 conventional fans a single HVLS unit replaces, cutting energy use by up to 70%.

No. Every Ayzair AS Series model runs at 40 dB(A) or below at full speed, measured 1.5 m below the fan — quieter than a normal conversation, which is why they suit gyms, religious halls and showrooms.

Yes. Run at low speed, an HVLS fan destratifies the warm air trapped at ceiling level and pushes it back down to the occupied zone, cutting heating cost in tall buildings.