One appliance and crew from Broughton, one from West Ashland and one from Newport Pagnell attended, along with an officer.
A fire, in an electrical vent in the kitchen of a two-storey house, was out when they arrived.
The fire had caused smoke logging to the property. One man and one woman were out of the building, uninured, before they arrived.
The firefighters used a positive pressure ventilation fan to help clear the smoke, and a thermal imaging camera.
They also installed smoke alarms within the building.