Firefighters responded to a fire involving an air con unit in Chalfont St Peter.
Crews were sent to Chiltern Hill at just after 2:15pm on Friday,
One appliance and crew from Amersham, one from Gerrards Cross and two from Slough attended, along with two officers.
A fire in the air conditioning unit of a three-storey industrial building, was out when they arrived.
They isolated the effected unit and used a thermal imaging camera.

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