Why is My Furnace Making Weird Noises?

gas-burnersWinter is just about the worst possible time to have your heating system develop problems. It’s also the time when heating issues are most likely to occur, thanks to the added stress they’re put under. If you can detect problems with your furnace early enough, you can have them repaired before they manage to develop too far.

However, you need to be especially vigilant if you want to catch them early enough. One of the first signs most homeowners notice that something is wrong with their furnace is the presence of strange noises while the system is operating. Read on for more information about common problem noises, and what causes them. Or if you’d like an estimate, fill out this quick form and we can get back to you ASAP!

Grinding

Inside the furnace is a part called the air handler, which what actually blows air around the house while the system is running. The air handler motor contains bearings that help to reduce friction on the part while it’s operating. These bearings can last quite a while, but they do wear down over time. As the bearings wear down, the friction on the air handler motor increases until it start to emit a grinding sound. If you hear this sound, it’s a good idea to call for repairs as soon as possible. If the bearings are not replaced in time, the motor could burn out entirely. It’s a lot more expensive to replace the air handler motor than to replace the bearings in that motor.

Booming

If your furnace is making a loud booming sound every time it starts up, you probably have an issue with delayed ignition. As the burner assembly in a gas furnace combusts fuel, carbon particles build up on the jets. While this may be harmless at first, over time the buildup will become severe enough that it will cause some of the jets to fire later than they should. When the jets do finally ignite, they burn through an excess of gas all at once. This is what causes that booming sound. Professional cleaning should clear out the burner assembly, and resolve this particular problem. You’re going to want to have it done quickly, though, as the burner assembly could eventually become so clogged that it stops igniting at all.

Short Cycling

If your furnace is turning itself on and off without seeming to complete a full heating cycle, you should call a professional as soon as possible. That behavior is called short cycling, and it’s not something you want to continue for any length of time. Short cycling accelerates the rate at which the various parts of the furnace wear down, making breakdowns more likely to occur. If the problem continues long enough, it can shorten the lifespan of the furnace by years. Make sure you call for repairs as soon as you notice your system doing this.

Comfort Central, Inc. provides comprehensive heater repair services in Brevard, NC. If your heater is in need of repairs, contact us today for an appointment. We’ll restore your furnace to top condition for the winter.

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