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Clean Air Act Approval


The Clean Air Act 1993 introduced a wide range of regulations, such as those which control smoke emissions and the height of chimneys, and those relating to the content and composition of motor fuels.

By controlling the height of chimneys, we are able to ensure that smoke is spread effectively to reduce the level of pollution at your homes. 

Under section 14 of the act, you must have the height of your chimney approved by us and adhere to the conditions attached to the approval. If your chimney is not approved, it is an offence to use, or permit use of, a furnace to:

  • burn pulverised fuel
  • burn at a rate of 45.4 kg or more an hour any other solid matter
  • burn at a rate equivalent to 366.4kw or more any liquid or gaseous matter

What you must do

You must complete and submit a Icon for pdf Chimney Height Application Form (PDF, 143.6kb) . For a paper copy of the application form please contact us and we will send you out a form.

Any application for chimney height approval must contain the required information, including a stack height calculation that takes into consideration any pollutants caused by the furnace. For further advice on the calculation, or support to complete the application form contact us.

What we must do

We must consider an application for approval for chimney height for a furnace and give a written decision within 28 days of receipt. If we fail to deal with the application within this time period, then approval without qualification is given. A longer period may be allowed if you have agreed it in writing with us. 

Contact us
Customer Services
03000 26 0000
Our address is:
  • Durham County Council
  • County Hall
  • Durham
  • County Durham
  • United Kingdom
  • DH1 5UQ
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