The Brookfield Volunteer Fire Company and Candlewood Company responded to Oak Grove Road yesterday on a report of a possible house fire.  The house was filled with smoke and the residents had self-evacuated.  Firefighters discovered the source of the problem in the basement  and determined there was no fire.  It was a furnace problem.  Firefighters helped ventilate the house of smoke before placing the incident under control. There were no reported injuries.