Dispatched for furnace tune-up. The components that are tested during the tuneup are heat exchanger, flame sensor, igniter, blower wheel, inducer, temp split and combustion in the heat exchanger. All components of the furnace are with in range of manufacture specifications. Recommend adding indoor air quality to the system. Indoor air quality products clean the air remove dust from the inside of the duct work and kills germs also helps with allergies. Not only does it have benefits for you and others in the house but it also helps the system by keeping moving parts clean. This helps reduce faults in the system. Thank you for allowing us in your house to provide the perfect home service and for being a member of the perfect family service club from your LBA Lead Service tech Calvin. If I provided a positive or five star experience. I’d appreciate you sharing your thoughts in a review.