When you hear your furnace making noises, you may worry that something is wrong. The good news is that some sounds are entirely normal and do not signal a problem. Unfortunately, there are other noises that should be addressed by a professional.
Here are some ways to decode the most common noises that may come from your heating unit.
When you hear screeching noises, it could be an issue with the motor bearing or a bad belt. If there is a bearing problem, a technician can apply a special lubricant that will stop the noise. A bad belt will need to be replaced so that the blower can run properly.
If you hear noises that sound like metal rubbing together, you may be having trouble with your furnace's blower wheel. This problem should be addressed immediately because it could damage your heating system. Many times, a technician will only need to tighten the wheel to solve the issue.
Generally, minor bangs and pops do not signal any problems. These noises come from expanding and contracting within the unit's air ducts. However, if these noises are extremely loud, you may have a problem with your furnace's combustion. If too much gas is in the chamber during injection, your furnace may become damaged.
If you hear a sound that is similar to a person shuffling a deck of cards, there may be an object stuck in the blower's blade. It's best to let a technician retrieve the object and check the area to make sure that no extra strain is being placed on your unit's motor.
When you are unsure about the noises coming from your furnace, make sure to consult a professional technician so that an expensive breakdown does not occur. At Choice Air Care, our McKinney and Frisco HVAC experts are ready to help: (972) 332-3927.