Was here for two furnace cleanings. Performed preferred customer furnace cleaning on the Daikin furnace. Cleaned the burners, checked the heat exchanger. Wiped down the inside of the furnace. Checked the motors for proper operation. Cycled the furnace. Checked for co. No co in the air stream at this time. The furnace is running normally at this time. Performed preferred customer furnace cleaning on the Goodman furnace. The Goodman furnace is 4 years old. Cleaned the burners. Checked the heat exchanger. Cleaned the inside of the furnace. Checked the motors for proper operation. Cycled the furnace. Checked for co in the air stream. No co in the air stream at this time. The furnace is running normally at this time.