At 1640 hrs Company 7 was alerted for the Pumper-Tanker and Truck for a house fire at 23644 Bayside Road. After clearing a 2nd due MVC, Squad 7 requested to run the assignment in place of Truck 7. Squad 7 and Engine 74 responded with 12 volunteers on the incident. Chief 1 arrived on the scene with a single story, single family home with light smoke visible. Squad 7 arrived next positioning on side Alpha, placed ground ladders then went inside to investigate finding smoke through out the house and a malfunctioning furnace. Crews from Co. 1 arrived next along with Engine 74 and assisted Squad 7. The rest of the assignment staged. Squad 7 checked for extension and ventilated. Power was secured to the furnace. Units cleared the scene at 1820 hrs