White Knight has introduced a green-coloured tumble dryer to mark its new marketing strategy for 2010 and to promote the dryer’s eco credentials. The green dryers will be available to see and buy at participating independents around the UK. The green gas-heated tumble dryer is part of the White Knight eco range. Using gas rather than electricity to heat the machine not only cuts the user’s energy bill by a whopping 61%, but it also reduces carbon emissions by 54%.