One appliance and crew from Broughton, one from West Ashland and one from Newport Pagnell attended, along with an officer.
Smoke was in the building when they arrived.
The firefighters used:
- Two sets of breathing apparatus
- One hose reel jet
- A thermal imaging camera
- A positive pressure ventilation fan
The air handling unit was around 50 per cent damaged by fire.
The firefighters isolated the services and ventilated the building.