We get it—it can sometimes be easy to ignore subtle noises coming from an appliance—even if they’re noises you have never heard before. It’s easy to deny something is wrong—after all, fixing a problem can be a nuisance. However, there are certain furnace noises that really shouldn’t be ignored.
For instance, a rattle could be something as simple as a loose panel that needs to be screwed down, but alternatively, it could suggest a cracked heat exchanger, which could lead to a dangerous carbon monoxide leak.
Here at Cool Sunshine, we understand how important it is to protect not only your furnace efficiency, but more importantly, your safety! If you hear suspicious noises, please don’t hesitate to schedule a visit with one of our technicians. Below, we’ve listed 4 noises your furnace shouldn’t be making.
A loud screeching noise is probably a sign that your furnace’s blower motor isn’t working as it should. A malfunctioning blower motor means the heat produced by your furnace won’t be able to circulate warm air around your home successfully.
This may mean that the blower motor is in need of lubrication, but it could also be that the fan stopped altogether. The only way to properly diagnose this situation is by contacting a trained and experienced professional. Once the issue is diagnosed, we’ll be able to advise you on what steps need to be taken next.
If you hear something that resembles metal on metal, you probably are hearing metal on metal! This is an indication of a serious problem with the furnace’s blower wheel. If this is the case, you must turn off your furnace and contact a professional right away in order to prevent further damage to the wheel. More damage to the wheel equates more damage to your wallet, after all.
Also described as banging, you don’t want to hear this right after your system starts up. If you do, it’s indicative of a dirty burner, which can be dangerous. The noise you’re hearing is caused by a delay in ignition due to dirt and buildup. The gas builds up as a result, and when the furnace ignites, a small explosion occurs.
Cleaning the burners yourself isn’t advisable. There is too much room for error, and you don’t want to spend more money in the long run, right? It’s always better to call in a pro, especially when dealing with gas.
Rattling doesn’t seem very threatening, right? In the case of a loose panel, it’s not, but there are definitely other reasons you may be hearing this noise.
As we mentioned above, a broken heat exchanger could be the cause of the rattle. This is very dangerous as it risks your exposure to harmful carbon monoxide gas. Less serious possibilities include restricted airflow due to a dirty air filter, or a problem with the blower. Even though these are relatively minor possibilities, ignoring them can do a lot of harm to your heating system.
Cool Sunshine Heating and Air Conditioning, Inc. has served the Metro Denver area since 1997. We are one big happy family, and we’d like you to become a part of it! Call our team for furnace repair, custom HVAC services, and more.