Furnace Anatomy | DeZiel Heating & Air
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A furnace has many different parts that work together to heat your home. Here is a brief overview of the anatomy of a furnace:

A Furnace Anatomy

1. Burner: The burner is the part of the furnace that burns fuel to create heat. The type of fuel burned depends on the type of furnace. Some common fuels are natural gas, propane, and oil.

2. Heat exchanger: The heat exchanger is the part of the furnace that transfers heat from the burning fuel to the air in your home.

3. Blower: The blower is the part of the furnace that circulates air through the heat exchanger and into your home.

4. Thermostat: The thermostat is the part of the furnace that controls how often the unit turns on and off. The thermostat determines when your home needs to be heated or cooled.

5. Fan Limit Switch: The fan limit switch is the part of the furnace that controls when the blower should turn on and off. This prevents your blower from running continuously, which would cause it to overheat.

6. Humidifier: A humidifier is used in central forced-air heating systems that can add moisture into the air inside your home through a nozzle.

7. Air Filter: The filter traps dust particles before they enter your home, protecting your family’s health while also ensuring that your furnace operates effectively. Furnace filters should be changed every three months or more often if you have pets or live in an area with a lot of pollen.

8. Combustion chamber: The combustion chamber is the place where the fuel is burned to create heat for your home. This part of the furnace can get extremely hot, so it’s important to have an experienced technician inspect this area before you light your first fire.

9. Chimney flue: A chimney flue is used in invented furnaces, to allow carbon monoxide fumes from burning fuel to escape outside. These are sometimes referred to as exit or vent pipes because they are exit ways for fumes that are created by the boiler inside the furnace. The pipe should be checked each time someone lights a fire in order to make sure it isn’t blocked and properly connected.

10. Return Register: The return register is the part of the furnace that brings air back into the system. This air is then heated and sent back out through the supply registers.

11. Return Duct: The return duct is a system of ducts that bring air from the furnace into each room in your home. This part of the system should be kept free and clear of obstructions so the heated air can flow smoothly through your whole house.

12. Blower Motor: The blower motor is the part of the furnace that makes your forced-air heating system possible. It moves air through your entire home and keeps every room evenly heated.

13. Blower Chamber: The blower chamber is the part of the furnace that the blower motor sits in. This is where you’ll find your furnace’s filters and the limit switch.

14. Flame Sensor: The flame sensor is the part of the furnace that monitors the flame in the combustion chamber. If the flame goes out, the sensor will shut down the furnace to prevent a dangerous situation.

15. Pilot Light or Electronic Ignition: The pilot light or electronic ignition is the part of the furnace that keeps your burner lit when you turn on your system. This should be checked to make sure it operates properly before each use.

16. Burner Cover: The burner cover is the part of the furnace that protects the burner from being damaged. It should be kept in good condition so the burner can function properly.

17. Supply Plenum: The supply plenum is the part of the furnace that distributes heated air from the furnace to the different supply registers in your home. This part should be kept clear of obstructions so the heated air can flow freely.

18. Supply Duct: A supply duct is a part of the furnace that brings heated air into each room in your home. This part of the system should also be kept free and clear so you don’t lose energy efficiency.

19. Supply Register: A supply register distributes heated air from the furnace throughout your home.

Keep Your Furnace In Shape With DeZiel Heating & Air

Your furnace is an essential part of your home, so it’s important to keep it in good condition. To ensure that your furnace is running safely and efficiently, have a qualified technician inspect it at least once a year. DeZiel Heating & Air can help you take care of your furnace so you can stay warm all winter long.

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Contact us today to learn more about our products and services! Give our team of experts a call at 763-684-3965 and make an appointment. We’ll be more than happy to assist you!

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