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Cad 21 Limited

Cad 21 Limited Contact Details

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Tony Grainger
Unit 12 Berrymore Court
Northumberland Business Park
Newcastle Upon Tyne
Tyne and Weir
NE23 7RZ
England UK

About Cad 21 Limited

CAD 21 was established in 1998 and from a clean sheet, we have adopted a philosophy of clear honest communications to ensure that clients have access to the actual engineers involved in the detailed design of their projects and not down through a hierarchy. Our engineers have been hand picked to gel in a team that is committed to producing high quality, practical designs in a friendly and approachable manner.

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

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

  • 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 (EPCs).

  • Instantaneous domestic hot water heating to reduce standing loss.

  • 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.

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

  • Maximisation of natural ventilation with consideration given to overnight free cooling, utilising the building mass to store lower temperatures and offset heat gains during the day.

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BREEAM - CAD 21 are accredited by the BRE to carry out BREEAM assessments and certifications.

  • Self testing thermostatic hot water mixing valves

  • Self testing emergency lighting

  • Concentric pipe underfloor heating

  • Passive chilled beams

  • Low intrusive maintenance solutions

  • New materials and installation methods

  • Aspirated fire alarm systems

  • Pin point location staff attack systems with alarm interface

  • Fully automatic lighting control systems.

  • I.P. Based CCTV systems.

  • Systems zoning with separate meters to provide flexibility for both operation, and future alteration or extension.

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

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

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

  • The use of recyclable materials encouraged and hazardous materials such as CFCs will be excluded.

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

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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.

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CAD 21 are professional design consultants in the field of building services engineering encompassing the following specialist areas:
  • Building Management Systems and Controls

  • Lightning Protection

  • Medical Gases and Compressed Air Services

  • Low Carbon Emission and Renewable Energy Systems

  • Heating Services

  • Energy Surveys

  • Condition Surveys

  • SBEM calculations and reports

  • EPC (energy performance certificates)

  • BREEAM assessments

To promote low carbon design CAD 21 are the main sponsors of the ''Greening Government'' conference hosted by Gov Today. For further information please visit

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Cad 21 Limited Branches
Cad21 Ltd
Unit 15 Halegrove Court, Cygnet Drive, Stockton-on-Tees, TS18 3DB
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