Why is it important to have a furnace clean and check?
Many furnace problems are related to not being properly cleaned or tuned-up.
For example, your furnace has a blower motor that is constantly pushing air through your house. Dust can and does collect over the vent that keep it cool. Without that dust cleaned regularly your blower motor will run hotter, shortening the life of that motor.
There is also a forced vent motor that moves air through your combustion chamber. This motor also can fail if it’s not cleaned regularly.
One more example is the flame sensor. Without a proper furnace clean and check residue develops on the flame sensor. This residue can cause your furnace to not sense flame and shut your furnace down.