Cefnogi

ID sylw: 72162

Derbyniwyd: 13/09/2021

Ymatebydd: Good Homes Alliance

Asiant : Good Homes Alliance

We welcome your DPD and it has much to be commended, we do however wish to comment on some aspects that we think are embodied in our comments below:

• SAP does not demonstrate energy efficiency in operation
• The Future Homes Standard does not set out performance metrics for performance in use
• Nationally recognised standards for performance in use are mainly associated with the Passivhaus system, NEF’s Assured Performance Process.
• The most up to date SAP does not deal with the ‘performance gap’.
• The term Net Zero Carbon should be defined as either “in use” or “whole life net zero” to include in use and the whole carbon in materials cycle