HVLS technology works on a simple air movement concept. On a hot, humid day you feel cool when a breeze is blowing; the breeze causes evaporation of moisture on your skin surface and you do not need to be a rocket scientist to know that evaporation takes away the latent heat off your skin so you feel cool. Air has significant mass, and once it starts moving - as inertia is overcome - the momentum of the moving air mass allows for a continuous air circulation requiring little effort to maintain it. HVLS fans - with their large blades and low speed - move and mix large masses of air using very little energy as low speed air motion requires less energy (the larger size of HVLS fans help create larger flows of air that have proportionally less surface area and therefore encounter less friction and related drag, which allows the air to move further using less energy and effort than the standard 36 inches high-speed fans).

It is common knowledge in fan design that the power required to drive a fan varies approximately with the cube of the average air speed through the fan - i.e. doubling the air speed requires eight times the power. Accordingly, a fan delivering air at 20 mph requires 64 times as much power as one delivering air at 5 mph. While a breeze blowing over our skin makes us feel cool and comfortable, high speed air movement does not provide any additional cooling and is often very unlikable and disruptive (hence undesirable). HVLS fans have become an effective and cost efficient air movement solution in many large facilities for cooling, heat destratification, supplementing Air Conditioning, and ventilation. They are much more effective and energy efficient than the high-speed standard industrial fans (one HVLS fan can replace many high-speed fans) and provide quick payback and high return on investment through significant energy savings.