Active system
The Home Quality Mark One, Technical Manual SD239, England, Scotland & Wales, published by BRE in 2018, suggests that active systems are:
Any home systems that require active operation or maintenance. This includes common home systems such as:
- Heating and hot water systems.
- Ventilation systems.
- Low and zero carbon technologies.
- Comfort cooling systems.
- Appliances.
- Showers or baths, WCs.
- Lighting.
- Safety systems (e.g. smoke detectors, fire alarms and sprinklers).
- Security systems.
- Smart devices (e.g. as smart meters).
As well as any other systems, which may be less typical, such as:
- Electric car charging points.
- Living roof systems (e.g. green roofs).
- Flood resilience measures.
- Drainage systems or strategies (e.g. SuDS).
- Temperature control measures (e.g. active external shading).
NB Heritage Building Retrofit Toolkit, published by the City of London Corporation in March 2024, defines active systems as: ‘The incorporation of mechanical systems that use or produce energy.’
[edit] Related articles on Designing Buildings
Featured articles
Check out some of the best features and news from Designing Buildings as well as key stories from around the web.
Recognition, influence and growth
SocEnv identifies three strategic pillars in new strategy to 2045.
Discover the future of roofing, cladding and insulation.
New guidance for professional practice, cultural change and regulation in social housing.
The heritage of nuclear and conventional power stations.
New measures to stop people being ripped off
Government to protect families from cowboy builders and aggressive bailiffs.
New Futurebuild showcase brings an innovation-first approach.
National Planning Policy Framework
Understanding the 2026 changes.
ECA's public affairs priorities
Member consultation opens to shape priorities for 2027 to 2030.
Dutyholder responsibilities from 1 July 2026.
Where performance meets practice
The Building Envelope Stage at UKCW Birmingham.
CIAT publishes briefing on planning reforms.
Leaders in Learning for Practice Network
Call for conservation leaders in learning to register interest in new network.

















