A green-fingered dad has invented a washing machine-sized incinerator that turns rubbish and dirty NAPPIES into fuel that can heat an entire home.<br /><br />Nik Spencer, 48, created the device which is filled with waste and left overnight to slowly burn and convert into a charcoal-like substance.<br /><br />The charred remains left in The Home Energy Resources Unit, or HERU, is then used to heat a household boiler.
