In the late 1980s, oil was virtually the last choice for central heating fuel where mains gas was not available. Oil was perceived as dirty and smelly. The boilers themselves were large, unsightly and noisy. Hedley Mickelburgh, using his 20 years' experience in the oil heating industry, set out to design a boiler that would overcome all these difficulties. The result, after years of research and development, was the unique Wallstar.