I conducted a thorough furnace inspection, starting with a detailed examination of the exhaust pipe. Adjustments were made to prevent freezing, ensuring optimal performance. The intake was reconfigured to draw air from the basement instead of outside, providing a temporary solution. I also cleared any blockages in the drains to maintain efficient drainage. Throughout the process, I verified that the system was operating correctly, checking all components for proper function. The furnace was left in a fully operational state, ready for continued use.