NatHERS Whole of Home Guidance Note

The Whole of Home Guidance Note contains advice to assist assessors undertaking a Whole of Home assessment. It should be read in conjunction with the NatHERS Technical Note.

The document is currently being edited, but you can request a copy of the unedited version by contacting the NatHERS Administrator via

A final version will be added to this webpage in mid-September 2022.

The Guidance Note is initially issued as a separate document with the intention of incorporating it as a chapter into the NatHERS Assessor Handbook in the future. This strategy will allow the Guidance Note to be rapidly updated to address any issues that arise once assessors start to undertake Whole of Home assessments.