Upon arrival, I assessed an inoperable furnace. Initial inspection revealed that the gas supply had been turned off by the homeowner. Wire ties indicated a previous red tag, suggesting the furnace had been deemed unsafe in the past. Further inspection showed that the inducer motor, responsible for drawing air into the furnace, was failing due to worn bearings. After freeing the inducer impeller, it operated but emitted excessive noise, indicating imminent failure. The furnace fan also exhibited loud droning, another sign of failing bearings. Dust buildup on the fan and heat exchanger was significant, impairing airflow and causing excessive stress on the heat exchanger. A crack in the heat exchanger was discovered, making the furnace unsafe for heating. Additionally, the ductwork was heavily contaminated with debris. I discussed these findings with the homeowner and, with their approval, contacted a field supervisor to arrange for a new furnace installation and duct cleaning.