Daily briefing
Building Services Today briefing: Friday 23 October 2026
Two stories from the last 24 hours.
Stories from the last 24 hours
CIBSE publishes TM59 (2026) but 2017 edition still rules for Part O compliance
The institution's revised overheating methodology adds a sleeping-hours bedroom criterion, 2050s weather files and an unconstrained test, while it is in discussion with the Building Safety Regulator about updating the Approved Documents.
ECA urges members to comment on draft fourth edition of IET energy storage code
The Electrical Contractors' Association has asked members to respond to the IET's draft fourth edition of its Code of Practice for Electrical Energy Storage Systems before the 9am deadline on 16 November 2026.
About this briefing
Published on weekday mornings. Every item comes from a story Building Services Today has already published and checked against its sources, from dates organisers have published, or from our data trackers. See the events and awards calendar, or get the week's stories by email with the weekly newsletter.