I completed a full furnace installation today, removing the old heating system and installing a high-efficiency replacement. The furnace replacement process involved disconnecting and safely disposing of the old unit, modifying the existing ductwork to accommodate the new system, and installing updated gas lines and electrical connections. During the heating replacement, I also installed a new flue system to ensure proper ventilation. After completing the furnace installation, I performed comprehensive testing to verify proper operation, including checking gas pressure, airflow, and safety controls.