Wed, 29 Jul 2026 20:40:07 +0100 https://www.greenbuildingforum.co.uk/newforum/ Lussumo Vanilla 1.0.3 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18451&Focus=311138#Comment_311138 https://www.greenbuildingforum.co.uk/newforum/comments.php?DiscussionID=18451&Focus=311138#Comment_311138 Wed, 29 Jul 2026 15:09:12 +0100 Doubting_Thomas Posted By: Mike1Yes, that's the limit for the house as a whole - but based on climate data that is rapidly becoming obsolete. Better to use future climate data instead - see https://colbe.bath.ac.uk/.

I don't disagree, but once you have that data you can also test this in the Passivhaus PHPP model.

There is a built-in 'Stress Test' for summer overheating that lets you turn off certain measures like night purge, to assess the implications for overnight heatwaves like the one we had recently. You can also adjust the peak temperatures used in the (localised) climate file to add an extra few degrees above the present-day model.]]>