Directive 2010/31/EU is a follow-up measure to Directive 89/106/EEC, as amended, on construction products and to Directive 92/42/EEC, as amended, on efficiency requirements for new hot-water boilers. Construction products may only be placed on the market if they are fit for their intended use. In this regard they must have such characteristics that the works in which they are to be incorporated can satisfy the essential requirements with regard to: mechanical resistance and stability; safety in the event of fire; hygiene, health and the environment; safety in use; protection against noise; and energy economy and heat retention. Directive 92/42/EEC establishes the essential requirements to be met by new hot-water boilers fired with liquid or gaseous fuels.