• Royal Decree of 8 January 2004 to regulate the emission levels of pollutants in the oil and gas fired heaters with a rated thermal input equal to or less than 400 kW (consolidated version, in Dutch or French)
  • Royal Decree of 12 October 2010 regulating the minimum requirements of efficiency and emission levels of pollutants for heating appliances for solid fuels (Dutch / French)
  • Royal Decree of 5 April 2011 laying down the requirements to which wood pellets must comply in order to be used as fuel for non-industrial heating appliances (Dutch / French)