Higher-risk household appliances We can reveal that there were 6,206 household fires caused by faulty appliances and leads between 1 April 2014 and 31 March 2016. Fires caused by faulty washing machines and tumble dryers account for more than a third (35%) of this overall number, meaning these two appliances cause more than 20 fires per week on average. Other high-risk appliances for the same period include cookers and ovens (11%), dishwashers (10%) and fridges, freezers and fridge-freezers (8%).