5 Furnace Noises You Shouldn’t Ignore

5 Furnace Noises You Shouldn’t Ignore

Do you hear a strange noise coming from your furnace? This unit normally produces sound when it is turned on and off, but the rumbling, rattling or clicking sounds are not part of your furnace’s normal operation. Make sure to look into these five (5) furnaces noises that should be addressed immediately.


If you hear a clicking noise from the furnace, it explains one thing – a faulty flame sensor. In some instances, the problem might be caused by the vibration of the ducts and other parts of the system. The noise may also indicate an issue in the oil or gas ignition.


Does your furnace produce a rattling sound when it turns on? This is an indication of a damaged or worn-out component on the fan or motor of the unit. In other cases, this noise is a sign of carbon monoxide issue. Ask your HVAC contractor to conduct an assessment on every part of your heating system including the heat exchanger.


Older furnaces commonly produce a booming sound due to gas build-up. When the ignition process is interrupted, most likely, the air ducts are contracting or expanding. Delayed ignition is common on gas furnaces which can lead to a mini-explosion effect if not handled carefully. A delay in the ignition is commonly caused by insufficient gas, impaired pilot light, and dirty or blocked gas burners.


If your furnace has not been used for a long time, the unit may start producing a chirping noise. And it is something you do not want to hear in the middle of the cold nights. The strain in the blower wheel possibly causes the high-pitched chirping sound in your furnace. Get this problem fixed as soon as you notice it.


The high-pitched and repeated squeal in your furnace is an indication of worn-out belts. If the issues are the belts or bearings, they only need lubrication to function properly. Make sure to provide the belts, bearings and other internal parts the right amount of lubrication to avoid friction.

Inspection and Furnace Repair in Grand Prairie, TX

Do not allow these disturbing noises to ruin your comfort at home. A simple problem in the furnace that started with any of these annoying sounds can lead to bigger problems if not given quick and superior attention.

For your heating needs and concerns these cold months, call us at BV Air Conditioning for professional and budget-friendly HVAC services. Let us handle every problem in your heating and cooling system with precision and care.

Share this:

service areas