1542 - Box 2-09 1st alarm units were sent to Milford Twp, 7016 Rt 333 in Rockville, for a smoke in a structure. Box 2-09. Engine 2 marked out with 5. JCCC advised a house full of smoke, unknown origin, caller was evacuating. Chief 2-2 on scene, normal exterior. Interior crews had light smoke throughout the house, found to be a furnace malfunction, no fire. Box was reduced to Co2 and EMS. Homeowner was transported for eval