Heating marquees with elegance Marquees are notoriously difficult to heat effectively. They have no thermal mass and because the walls and roof are so thin they have a chronic u-value. The conventional way to heat a marquee is with a blown air system, but the main drawback of heating a marquee with a blower is that the warmed air escapes almost immediately. Other drawbacks are that the blowers are usually noisy and they can produce unpleasant fumes. Enter SunSwitch - no noise, no smell, fabulously comfortable heart, no warm-up time - and a very useable light output. SunSwitch heaters emits short wavelength infra-red, like the sun, which does not waste energy trying to heat the air. It passes through the air to heat anything within its warm zone. With SunSwitch, instead of pumping warm air in at one or two points, the marquee should be divided into comfort zones.. We are pleased to offer advice on heater selection, positioning and sizing - please telephone 01424 883344 - or visit our industrial section for specifications and prices. We are Trading Standards approved. More info