High Heat Load Fume Cupboards

Meeting BS EN 14175-7 – Fume Cupboards for high heat and acidic load – requires a special purpose fume cupboard classified for special applications involving high heat load within the workspace. The fume cupboard requires additional construction, safety, operating and maintenance features to those identified in BS EN 14175-1 to BS EN 14175-6 whilst maintaining containment. Heat sources of 4 kW and above per linear metre inner width of the fume cupboard can be considered as high heat loads.

Clean Air has considerable expertise in the design and manufacture of special fume cupboards of varying sizes for high heat load. We have undertaken extensive tests within our own in-house type-testing facility to confirm that they provide the containment necessary to meet the requirements of BS EN 14175-7. See our case study  and contact us for more information.

Our experience shows that fume cupboards for high heat load offer much safer working conditions when operated with fixed air volume flow.

Please be advised that existing fume cupboards and ‘standard designs’ cannot be guaranteed as suitable for use with high heat load unless extensively tested to the requirements of BS EN 14175-7.

Clean Air can assist you to confirm the suitability of your fume cupboard design using our type-testing capabilities either in-house or at your facility.

Keeping you safe – Service & maintenance

We provide full service and maintenance packages for our fume cupboards, and for most other makes and models of fume cupboard.

During our fume cupboard servicing visit highly trained, DBS-checked test engineers ensure that each fume cupboard, fume extract system and fan is completely fit for purpose and complies with BS EN 14175. Contact us for details.


The high heat load fume cupboards in service for Johnson Matthey
High heat load fume cupboard testing at client's site
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