August 17th, 2021
Heat Loss in Dwellings
With the effects of climate change becoming more prevalent and legislation adapting to reflect it, we thought it would be useful to cover the key principles of heat loss in dwellings, and how…
Energy & Sustainability.
February 10th, 2020
SAP 10 – Battery Storage and PV Diverters
Following on from our previous articles about the changes expected in SAP 10, in this article we cover the addition of diverters and battery storage for PV systems in the next version of…
January 10th, 2020
Big Energy Saving Week 20-26 January
New research marking the start of Big Energy Saving Week 2020 (20-26 January) has revealed a significant gap in consumer understanding about managing their household energy use and the simple steps people can take to…
November 10th, 2019
SAP 10 – Changes to Lighting
If you’re a regular reader of our technical bulletins, you’ll know that in our last two issues we looked at two of the methodological changes expected in the next version of SAP: hot…
September 11th, 2019
What is RdSAP 9.94?
RdSAP 9.94 is the latest version of RdSAP used for producing Energy Performance Certificates for existing dwellings from 22nd September 2019. The update from 9.93 includes:
September 10th, 2019
RdSAP – A Potted History (2)
SAP was introduced for the first time in 1995, as the basis of a new approach to Building Regulations for new homes. It was subsequently updated in 1998, 2001, 2005, 2009 and 2012…
August 10th, 2019
SAP 10 – Changes to Heating Patterns
In our last Technical Bulletin, we described the changes to the hot water calculations for SAP 10. In this issue, we will be taking a closer look at the changes to the heating…
May 17th, 2019
Going off the Gas Grid
The Committee on Climate Change recently issued a report describing why the UK housing stock is not fit for purpose and recommended possible changes to improve the efficiency of housing stock and reduce our carbon…
May 10th, 2019
SAP 10 – Changes to Water Heating Calculations
In this article, Dr Lisa Blake looks at the changes to the calculations for the hot water demand in SAP 10. A bit of background SAP is the Standard Assessment Procedure developed and maintained…
November 10th, 2018
New Standards for Domestic Boiler Installations – April 2018
Lisa Blake looks at the Boiler Plus regulations that were introduced in April 2018, and how they affect boiler installations as well as the technologies promoted by Boiler Plus and the difference between…