The Most Common Cause of Furnace Breakdowns

Man fixing the furnace that broke downYour furnace is one of the most important appliances in your home. It keeps your home comfortable during winter, especially at night, and also helps keep at least some of your pipes safe from freezing. A properly insulated home with a furnace working in top condition is less likely to have a mold problem.

It’s good to know there’s always a technician from Desert Star Heating and Air on standby for furnace repair in West Valley if your furnace breaks down. But it’s always better to know how to take care of your furnace so it can last longer and doesn’t cause a spike in your utility bills.

The Leading Reason for Furnace Breakdowns

One of the leading reasons behind a broken furnace is a cracked or inefficient heat exchanger. The heat exchanger is so important that if it’s cracked, you may be better off buying an entirely new furnace, especially if your warranty is already up.

The heat exchanger, an S-shaped metal coil inside the furnace, is the component most responsible for heating the air. The furnace sucks in the air from a room and passes it over the heat exchanger, which then lets its heat transfer to the cool air before the now-heated air is blown back to the room.

How to Prevent the Heat Exchanger from Cracking

The cycle of transferring heat to the cool air before that air is released to the room is what keeps the heat exchanger from overheating. Without enough cool air passing over the heat exchanger, this component may overheat, causing it to crack.

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Some of the things homeowners do are responsible for limiting the furnace’s air intake:

  • Neglecting to replace the furnace filter, which has become blocked by dirt.
  • Closing vents in unoccupied rooms. Your furnace is designed to work with all vents open to allow for the free flow of air. With limited airflow, the furnace fan works more slowly, so the heat exchanger is not receiving enough air to cool.
  • The pressure and the heat can cause the heat exchanger to break down. Contrary to what most people believe, closing vents in unoccupied rooms wastes more energy.
  • The same is true about blocked vents. Furniture, appliances, drapes and other objects may block a vent, preventing it from working optimally.

Remember these reminders to help you avoid causing damage to your furnace. For better longevity, have it serviced every fall before it has to perform full duty.