Low Energy Lighting - utilising highly efficient linear and compact fluorescent lamps with presence detection and daylight control.

Cold Cathode and LED emergency exit lighting will be incorporated to reduce energy consumption and with extended life improve sustainability.

LED lighting will be considered wherever possible to reduce energy and maintenance.

External lighting-utilising time control with photocell override.

High efficiency condensing and heat pump boilers in conjunction with underfloor heating to provide high comfort, low energy systems.

Heat recovery will be incorporated into ventilation systems to extract heat from exhaust air and pre-heat incoming fresh air.

Energy Performance CAD 21 are accredited to produce energy performance certificates (EPC's)

Instantaneous domestic hot water heating to reduce standing losses.

High level of thermal insulation to pipework and plant to reduce heat losses.

The feasibility of utilising ground source heat pumps, solar panels, photovoltaics, wind turbines and combined heat and power systems will be investigated taking into account planning restrictions, aesthetics, building load characteristics and whole life cycle costing.

Solar reflectance, shading and building orientation will be carefully considered to reduce thermal loads.

Natural ventilation will be maximised with consideration being given to overnight free cooling, utilising the building mass to store lower temperatures and offset heat gains during the day.


CAD 21 are accredited by the BRE and have fully qualified in-house assessors to carry out BREEAM assessments and certifications for the full range of building sectors including Healthcare, Education, Multi-Residential and Commercial projects.



Self Testing thermostatic hot water mixing valves linked to the Building Management System will be considered.

Self Testing emergency lighting linked to the Building Management System.

Concentric pipe underfloor heating will be considered for comfort and
anti-ligature benefits.

Passive Chilled beams will be considered for comfort and anti-ligature benefits.

Low intrusive maintenance solutions.

New materials and installation methods such as press-fit ductile
steel pipework.

Aspirated Fire Alarm systems for reduced ligature risk.

Pin Point location staff attack systems with alarm interface will be considered.

Fully automatic lighting control systems.

I.P. Based CCTV systems.


Systems zoning will be considered with separate meters to provide flexibility for both operation and future alteration or extension.

Electrical power and lighting will be designed utilising busbar systems or modular wiring systems allowing for flexibility and future proofing.


Rainwater harvesting and grey water recovery systems will be investigated and incorporated where possible to reduce water consumption.

Locally produced plant and equipment will be encouraged to reduce transport carbon impact.

The use of recyclable materials will be encouraged and hazardous materials such as CFC's will be excluded.

Washable filters rather than disposable units will be incorporated to prevent waste.


With the backing of our clients systems will be selected on whole life costing rather than purely capital cost to reduce the impact of the building on the environment over a fixed minimum whole life period.






CAD 21 Sponsors
To promote low carbon design CAD 21 are the main sponsors of the "Greening Government" conference hosted by Gov Today.