Energy Ratings and EPCs
How to order
If you already know what you want to order, go straight to the downloadable order forms.
What are EPCs, PEAs and when do I need them?
Click here to go to NHBC's Brief Guide to EPCs and PEAs
NHBC Energy Efficiency Services
For over ten years, NHBC has been a leading provider of residential Energy Ratings for both new build and conversion developments. Our service now includes the latest Building Regulations assessment procedures. We are able to provide the following information to support of your Building Control Submission:
| Design | As built | |
| TER Calculations | Y | Y |
| DER Calculations | Y | Y |
| SAP Ratings | Y | Y |
| EPCs & PEA certificates | Y | Y |
| SBEM assessments | Y | Y |
| NHERs | Y | Y |
| Air Leakage Testing | Y |
We also provide energy rating calculations and supporting documentation for all developments which do not fall under the new requirements of Approved Document Part L1A (England & Wales) or Section 6 - Energy (Scottish Building Standards).
We offer independent advice on how to meet the energy efficiency standards of the Building Regulations or clients targets. Our services can be tailored to meet the specific needs of each development, whatever its size, type of home or method of construction. For example, we can work with you and assist in the selection of the most cost-effective, low-risk solution to improve your rating without needing to promote any particular product. Our team of assessors is able to offer impartial guidance to ensure compliance is achieved at both the design and final stage.
"Do we use the airtightness test figure achieved on the tested property to calculate the EPC for all properties of the same type and testing group?"
In response to our queries, CLG have now provided this considered opinion.
- Where an airtightness test is carried out and the result is better (lower) than the DER assumption for air leakage, then the "improved" EPC should be given only for the property(ies) tested.
- For properties of the same type as that tested, the EPC should be calculated based on the DER assumption for air leakage and not the result of the test. Air leakage results only prove that the property tested has achieved a specific airtightness and so it may not be appropriate to suggest that all properties in that type will achieve such a result. However, it would be reasonable to assume that they would achieve at least the design leakage rate based on a similar standard of construction and workmanship.
- In the event that an airtightness test shows a property to be less airtight than the design assumption and the DER still is less than the TER (complies with the B Regs), then it would be reasonable to give the same EPC value to all properties of the same type (and in the same testing group) based on the actual airtightness achieved by the tested property.
For further information or to register your interest in NHBCs Energy rating and EPC services click here: energyadmin@nhbc.co.uk or call us on 0844 633 1000 and ask for 'Energy Admin'.
