Seasonal commissioning
The CIBSE Commissioning Codes generally use the following description to define ‘commissioning’: ‘The advancement of an installation from the state of static completion to full working order to specified requirements. It includes the setting to work of an installation, the recording of set values and performance for future reference, and the regulation of the system.’
The concept of seasonal commissioning recognises that some aspects of the systems need to be commissioned when the external temperatures and indoor occupancy patterns are close to the peak conditions for which the system was designed.
Seasonal commissioning is the performance evaluation of a building and its engineering services under full load conditions during peak heating and cooling seasons, as well as part-load conditions in spring and autumn.
Ref Seasonal Commissioning (BG 44/2013), written by Sands J and published by BSRIA in January 2013.
NB BG 88 Commissioning Responsibilities Framework, by Matt Lowry, published by BSRIA in January 2025, defines seasonal commissioning as: ‘The performance evaluation of a building and its engineering services under full load conditions during peak heating and cooling seasons, as well as part-load conditions in spring and autumn.’
--BSRIA
[edit] Related articles on Designing Buildings
Featured articles and news
We're expanding our collaborative mission by launching DB Intelligence, an exclusive market research advisory panel. Built environment professionals can now get paid to share their expertise on industry trends, products and services.
Panel members receive direct financial incentives for participating in research projects like short surveys, 1-2-1 interviews and focus groups. Register today to shape the future of the construction sector.
Building Control Independent Panel final report
A precis of a key report led by Dame Hackitt with full recommendations and link to the government response.
Guide to ISO 19650 for Architecture Firms (2026)
A user gives their low down.
A UK training and membership provider for mould remediation professionals.
Building Safety recap April, 2026
A short and longer run-through of the month, with links to further information and sources.
CIAT May 2026 briefing.
Independent NSI and BAFE study exploring how organisations are changing the way they buy fire safety services.
From medieval scribes to modern word art.
ECA welcomes crackdown on late payment and push for clean energy, whilst CIOB seek fixed cladding removal timeframes.
Cyber Security in the Built Environment
Protecting projects, data, and digital assets: A CIOB Academy TIS.
Managing competence in the built environment
ITFG publishes new industry guide on how to meet the ICC principles.
The UK's campaign to reduce noise pollution: Mythbusting, articles and topic guides.