Performed maintenance on a 2020 Lennox system. Heating temperature split is 30 degrees. Combustion blower is in range. Component panel was cleaned, flame sensor cleaned. Ignitor is reading in range. Blower housing is clean. Filter is dirty. Outdoor unit dirty and was chemically cleaned. Refrigerant pressures are in range. Compressor and fan amperages are ok at this time. Condensate lines are free of debris. System was cycled before departure.