ErP stands for energy-related products. It is a rating system that uses the letters A to G to rate a boiler’s efficiency, with A being the highest and G the lowest. The ErP system is part of a directive by the European Union that aims to increase boiler efficiency in EU member countries.
Older UK boilers were rated using the SEDUK system with an A to G rating, similar to ErP , but the ErP system adds an additional A+ and A++ rating. Though the UK has left the European Union, boiler manufacturers continue to use the ErP rating system.
A boiler with an A rating operates at 90% efficiency and a G rating is equal to 70% efficiency. Modern boilers have at least an A rating and an energy efficiency of 92% or better. There is usually a sticker on the boiler that displays its energy rating unless the boiler is old and manufactured before stickers were common.
Even if a boiler is rated A, after a few years it may be operating at less than the A rate 90% efficiency level. At the annual boiler service, the energy efficiency can be checked.
If the boiler is operating at the G rated level of less than 70% efficiency it’s adding about an extra £205 to £315 a year to fuel bills, it’s time to consider replacing it with a new boiler. For advice on new boiler installation in Oswestry, Chester, Ellesmere Port and other nearby areas, talk to Xgas.