Air Purification, Heating and Cooling

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Phone 0845 6880112 | Mailinfo@puravent.co.uk

HVLS fans

HVLS fans

HVLS fans are brilliant at creating uniform cooling air movement in buildings.

The effect is more that you might imagine - the gentle wash of air movement as you wander round a large building such as a warehouse brings an uncanny sense of cooling, yet the air speed is unobtrusive and actually very pleasant.

Staff will get used to the cooler work environment and only notice the effect when they step outside an feel how hot it actually is. The cooling effect is because although the actual 'dry bulb' temperature of the air stays the same, the perceived (or apparent) temperature is decreased. This is because the the air movement over the clothes and skin causes an increase in evaporation from the skin which aids cooling.

These HVLS shed cooler fans have been developed using superb low revving, high torque, EC motors which when hooked up to one of the Evel controllers ensures that the lazy minimal sweep of the 5 blades can be increased steplessly to move more air on a hot day. With no gearbox and a slow revving EC motor these HVLS fans are the quietest and most efficient on the market.

HVLS fans, aka high volume low speed fans, are not only great for lowering perceived temperature they are also brilliant at lowering heating costs. During the winter, when the heating is on they ensure that the air in the building does not stratify, meaning that the thermostat reacts to a uniform average building temperature rather than an artificially low temperature at the occupied level because the air has thermally stratified. Heating cost savings in the range of 20 - 50% per annum are typical and investment payback is often a couple of years.

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