Furnace precision tune up; clean and tune up furnace; clean burners, test ignition components, adjust gas level, test safety circuit, check indoor motors, checked all electrical components, tested indoor air flow, checked heating temperatures, and tested overall furnace operation. Customer questioned about zoning. Determined we would have order Lennox zone panel to be applicable with Lennox communicating system. Will follow up on pricing and what would need to be done to zone system.