Apply for chimney height approval
The height of a commercial or industrial chimney is regulated under The Clean Air Act 1993 and must be approved by us before installation. This is to make sure furnace and large boiler emissions are at a safe height to avoid impacting health or causing a nuisance.
Your application can be refused if your chimney is not high enough.
Chimney height approval is required for commercial furnaces if they:
- burn pulverised fuel
- burn at a rate of 45.4kg or more an hour any other solid matter
- burn at a rate equivalent to 366.4kW or more any liquid or gaseous matter
It is an offence to operate a furnace meeting any of the above conditions if the chimney height has not been approved, or if any conditions that we have applied to the approval have not been met.
Your application for chimney height approval
If you are considering installing a furnace then chimney height approval is required. Your application must include all relevant information to enable the necessary calculations to be made. You can find more information on calculating appropriate chimney height on the DEFRA site.
All applications will be considered for approval and a written decision provided within 28 days of receipt. A longer period may be allowed if it has been agreed in writing between us and the applicant.
Contact us
If you require an application form or further advice, please call us on 01202 123 123
Chimney height approval is not required if it relates to:
-
a temporary replacement boiler or plant which is being maintained or repaired
- a temporary source of heat or power for building, construction works or research
- auxiliary plant used to bring other plant to an operating temperature; a mobile or transportable source of heat or power for agricultural operations