Three Most Common Signs That Your Gas Furnace Needs Repairs


The gas furnace plays an integral part in your home. It provides you with heat during the colder seasons, all while helping you save money on heating bills. 

With that said, gas furnaces are not infallible. They experience wear and tear and even age with time. It’s best if you keep a close eye on your gas furnace to ensure it operates efficiently at all times.

Here are three signs to help you determine if your gas furnace needs repairs or maintenance. 

1. The Gas Furnace Makes Weird Noises

Many people have this misconception that if they hear weird noises coming from their furnace, it’s likely a sign of problems. In reality, that’s not always the case.

You see, your gas furnace will emit sounds as it operates. It’s completely common for your gas furnace to make various noises, including hissing, clicking, and more. As long as it’s not excessively loud, you don’t have to worry about it.

However, if you hear a strange, loud noise coming from your furnace, that’s a sign that it may need repairs. These sounds include a humming sound, a grinding noise, a clicking sound, etc. 

As a general rule of thumb, if the noise coming from your gas furnace is an extreme deviation from the sounds that it usually makes, it’s likely a sign of a problem.

2. Your Home has a Musty Smell

When it comes to gas furnaces, you may notice a strong, musty smell in your home.

In fact, some people refer to it as the smell of a rotten egg. If you notice this stench, you might want to take a look at your gas furnace.

In most cases, the smell results from the buildup of corrosion inside the heating unit. In other words, the odor comes from the breakdown of the metal components inside your furnace. 

It may lead to compromised safety. The next time you smell it, you should contact a professional to look at it and provide furnace repair. 

3. There Are Frequent Gas Shut-Offs

Another sign that may prove that you need to schedule furnace repair or maintenance is frequent gas shut-offs.

When your furnace needs repairs, it may shut off unexpectedly. This event can result in not having enough heat or hot water for long periods.

When this happens, it’s a clear sign that your gas furnace needs some TLC. You can take a look at it yourself, but it’s much better to rely on a professional in this case.

An expert can diagnose your gas furnace and perform the repairs needed. If you notice frequent gas shut-offs, encourage your family to stay warm with clothing and blankets until the repairs reach completion. 


As you can see, there are various signs that can help you determine if the gas furnace in your home needs repairs or maintenance. If you notice that your furnace is emitting weird sounds, you smell a musty odor coming from the unit, or you experience frequent gas shut-offs, call an expert right away.

The professionals at Mainline Heating & Air can provide furnace repair in Alabaster and surrounding areas. Our team has years of experience in the field, working to ensure that your furnace is always running efficiently. If you think you need furnace repairs, contact us right away.

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