6 Unusual Furnace Noises and How to Fix Them

Your furnace works tirelessly to keep your home warm during the cold months. However, when it starts to make strange or disruptive noises, it can be an indication of an underlying problem with your system. 

The good news is that many of these noises have identifiable causes and solutions. Below, we’ll explore 6 unusual furnace noises and how you can solve them to restore the peace and warmth to your home.

1. Creaking and Popping Sounds

Cause: These noises often result from the expansion and contraction of the furnace’s metal components, as they heat up and cool down. 

Solution: Lubricating moving parts and tightening loose components can alleviate creaking and popping sounds. Regular maintenance by a professional can help prevent these noises.

2. Rattling or Vibrating Noises

Cause: Loose screws, panels, or other components in your furnace can cause rattling and vibrations.

Solution: Inspect your furnace for loose parts and secure them properly. If the noises persist, consider hiring a technician to identify the source of the problem.

3. Whistling or Hissing Sounds

Cause: These noises may indicate airflow problems, such as a clogged filter, a blocked vent, or blower motor issues.

Solution: Ensure proper air circulation by changing the air filter regularly and checking for obstructions in the vent system. If the problem persists, it’s best to consult a professional.

4. Banging or Thumping Noises

Cause: These loud sounds may signal significant issues like a damaged blower wheel, a broken motor mount, or an ignition problem.

Solution: Promptly contact an HVAC technician to inspect your furnace. Ignoring these noises can lead to further damage and potential safety hazards.

5. Squealing or Screeching Noises

Cause: Another strange furnace noise you may hear is a high-pitched squealing/screeching sound often originating from problems with the blower motor or the blower belt.

Solution: Address these noises quickly as they can lead to reduced furnace efficiency. It’s advisable to consult a professional for proper diagnosis and repair.

6. Boom or Explosion-Like Sounds

Cause: Hearing a sudden loud boom or explosion-like noise from your furnace is alarming and may indicate gas buildup, delayed ignition, or other dangerous issues.

Solution: In the case of these noises, turn off your furnace immediately and contact a professional technician for an emergency inspection. Safety should be the top priority.

Furnace Trouble? Supreme Has Your Back

While you may experience some bothersome furnace noises, most of them can be addressed with proper maintenance and timely repairs. 

Regularly scheduled maintenance, including professional check-ups, can help ensure your furnace operates efficiently and safely—and our team has the knowledge and skill to do it all!

We offer service agreements so furnace maintenance is done on a regular basis, giving you peace of mind no matter what.

If you’re in need of furnace services, contact the Supreme team.