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Heat Harvester from Monodraught
Heat Harvester from Monodraught is just 300mm diameter, looks like a jet engine, and works by sucking in the hot air that rises to the top of a building and blasting that hot air back down to floor level.
Hot air always rises and as a result, in buildings with a floor to ceiling height in excess of 5m, the temperature at the underside of roof level is often 4°C to 5°C higher than at floor level. Monodraught Heat Harvester overcomes this problem.
Launched in the USA three years ago, feedback shows a reduction in wintertime heating bills of typically 30 per cent, and up to 50 per cent in some cases. Heat Harvester runs on just a 35W motor, and based on 2006 energy costs offers a payback period of three years, inclusive of all costs.
A free initial survey of a potential installation determines the difference between floor and ceiling temperatures. Installations are guaranteed to reduce that difference to 1ºC within seven days, with a full refund for any dissatisfied customer.