Do I need to install an extraction canopy over my range, that was installed in 1999?

19 March 2008
Do I need to install an extraction canopy over my range, that was installed in 1999?

CESA, the Catering Equipment Suppliers' ssociation, answers your kitchen equipment queries

My Corgi gas engineer has told me that I need to install an extraction canopy over my range, that was installed in 1999. Do I?

The British Standard (BS 6173) for the installation of gas-fired appliances was extensively revised in 2001 and installations made before September that year do not need to comply with the standard. It is not retrospective.

However, the standard reflects best practice and current requirements, so you would do well to either install a ventilation system or undertake a risk assessment as recommended by the Health & Safety Executive.

It is especially important to check kitchens where type B appliances are fitted. (Type B means the appliance would normally require a dedicated flue system. However, a ventilation system can affect the performance of a flue, so many manufacturers permit the installation of type B appliances without the use of an individual flue, so long as they are under a suitable ventilation canopy.)

Where type B appliances are fitted, BS 6173 requires the provision of an interlock, which will shut off the gas supply to gas appliances in the event of an air movement failure (ie, if the ventilation systems stops working). Where there is no interlocking of the ventilation system and gas supply, users need to assess whether a risk is likely to arise and, if so, ensure that it is removed.

For more advice

Visit and click on the link "CESA Buying Guides." For energy-saving advice, click on "CESA Energy Saver."

If you have a question on equipment you would like an answer to, send an e-mail to

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