Why Is My Furnace Making Strange Noises




There are a number of things that can make a furnace produce strange noises. Before we did into this question, we first have to understand how a furnace system works before digging deeper into this issue.

One cause is the accumulation of excess debris in the system components. The fan blows dust and other objects into the furnace chamber, where it accumulates on the heat exchanger's surface. When these irregular objects scrape against each other during operation, they can create noise.

In addition, old or faulty components may be making noise as well. The combustion chamber contains a sacrificial magnesium anode rod which corrodes over time to prevent damage to the unit's metal parts from rust and corrosion. If this rod is broken or missing entirely, there will be nothing to protect the inside of your heating system from being exposed to water and air which can reduce its lifespan significantly.


What To Do When Your Furnace Stops Heating

If your furnace stops heating or running, this is a clear indication that there is a problem and you should contact an expert right away.

Don't try to fix your furnace yourself if it stops working because it can be very dangerous. A professional service technician for furnace troubleshooting will know how to handle the situation in the safest way possible and not put anyone at risk of exposure to carbon monoxide gas.


Do I Need to Call an Expert When My Furnace Stops Working?

Absolutely. Do not try to repair your furnace yourself if it stops working and call a professional heating system expert as soon as possible for fast and efficient service. The earlier you catch potential malfunctions, the easier and less expensive they will be to fix. For example, problems with part of your furnace's functionality may arise due to deposits on its surface which can be easily removed by a professional service technician. However, such issues can become major problems later on without proper maintenance.   

Furnaces are extremely dangerous if they malfunction and you shouldn't attempt to fix it yourself even for something as simple as changing the thermostat or cleaning the furnace's components because there is always that risk of carbon monoxide exposure.


Common Reasons Why Your Furnace Is Making Loud Noises



There are many reasons why you might hear loud noises coming from your furnace. If it stops working, don't attempt to fix the problem yourself because of how dangerous it can be. Most of these noises are relatively harmless but still worth checking out with a professional.

Here are some common reasons for strange furnace noises:


  • Dust accumulation on the heat exchanger

The fan blows dust and other debris into the heating system components where it accumulates on the surface of your furnace's heat exchanger. As your furnace heats up, this dust is scorched off by the high temperatures which cause it to move around inside while scraping against itself. This can produce odd sounds similar to stones being hit together or marbles rolling around in a metal container. 

  • Loud noises coming from the heat exchanger

Sparks generated by the excess debris hitting the heat exchanger's surface can cause a popping or crackling sound while your furnace is in operation. Make sure to have a professional check out your heating system if you hear loud noises coming from your heat exchanger because it may be corroded and need replacement.