The Energy Related Products (ErP) Directive has been designed to aid the EU in achieving reductions in energy usage: carbon, NOx and SO2 emissions and other environmental issues such as noise and the use of refrigerants in heat pumps. The Directive is also designed to help consumers identify the most energy efficient products on the market with energy efficiency labelling. The ErP details energy efficiency requirements which appliances must meet and preferably exceed. Manufacturers must ensure that their products are prepared for the new legislation changes, incorporating product updates to improve efficiency levels (e.g. fitting high efficiency circulating pumps).