National Home Energy Rating
The National Home Energy Rating Scheme (NHER) is both a UK accreditation scheme for energy assessors and a rating scale for the energy efficiency of housing.
The NHER is owned and operated by National Energy Services (NES). Until 2011, NES was a trading subsidiary of the National Energy Foundation, an independent charity set up in 1988 to promote energy conservation and renewable energy, which launched the NHER scheme in 1991.
The NHER runs an accreditation scheme for energy assessors to produce the following:
- Energy Performance Certificates for existing dwellings, using RDSAP
- Energy Performance Certificates for new build dwellings, using SAP
- Energy Performance Certificates for non domestic buildings dwellings, using SBEM
- Display Energy Certificates for public buildings, using DECs
The NHER scale for new build dwellings runs from 0 to 20, with 20 being best. It uses different criteria than the Standard Assessment Procedure (SAP) rating. The NHER rating takes into account the local environment and the effect it has on the building's energy rating. The NHER calculates the costs of space and water heating, but adds cooking, lights and appliances to give a comprehensive picture of energy usage in the home.
An average dwelling in England would currently score between 4.5 and 5.5 on the NHER scale. A gas-heated masonry semi meeting current United Kingdom Part L1 Building Regulations would score approximately NHER 10. A dwelling with NHER rating 20 achieves zero CO2 emissions along with zero net running costs.
In terms of domestic energy ratings for windows, this is a crucial factor to look for if you are looking to install new windows in your home. Put simply, a window energy rating acts a guide to how well the window in question will perform in terms of its energy efficiency. Ratings run from ‘A’ through to ‘G’, with ‘A’ being the best rating so is the one you should look out for. Recent changes to building regulations now state that windows for new homes must have a minimum ‘C’ rating, which shows how important the energy efficiency of windows has now become.[1]
References
- ↑ "Quality Joiners in Coventry – Shaws Bespoke Joinery". www.shawsjoinery.co.uk. Retrieved 2016-02-22.
