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furnace making noise

Furnace Making Noise? Here's What It Means | Montgomery, AL

Winter is coming to Montgomery, Alabama. In January, it can dip to as low as 39 degrees

With winter quickly approaching, you need a reliable furnace. But do you have a furnace making noise? 

When should you worry or do something about it? While it might seem stressful, it doesn’t have to be! Read this guide on why your furnace could be making noise and what to do today. 

A Whistling Sound

Common furnace issues in Montgomery, Alabama, include a whistling sound. It could be a subtle sound or very loud. 

The sound will depend on the damage and type of furnace. First, try to locate where the sound is coming from. 

It might be an air leak or blockage if it’s only in one location. An air vent could be partially closed as well. 

New furnaces could also cause sound. This is due to the velocity and volume of the air blowing through the home’s air ducts.

If this is the case, it’s normally not a concern. But if it continues, the increased air pressure could expose gaps in your home’s vents, causing the sound. 

Humming or Buzzing Sounds

While some noise is normal, you might have a broken furnace in AL if it’s making more than normal. Humming or buzzing sounds could mean electrical or mechanical problems. 

It could mean a problem with the blower fan motor. Electrical components might have worn out, or the fan motor might be dead. If this is the case, it’ll be the loudest at start-up. 

Once the fan is done starting up, the sound decreases. Blower fan issues might not see an improvement in reduced sound. 

A service technician can replace and diagnose faulty parts. If the problem is a blower fan, then the existing fan will need to be removed. 

Dripping or Splashing Sounds

Vent exhaust fumes could produce condensation from moisture in the air that must be drained. Watery noises are normally from high-efficiency furnaces. And water freezes at 32 degrees

If there’s a problem with drainage, it could lead to watery sounds. A blockage, clogged, or full drain pan might be the problem. 

If the noise is coming from air ducts or vents, it could mean a serious moisture problem. Inspect your home right away. Moisture can cause structural damage, mold growth, and more. 


Rattling is a common problem sound. The most common reason is due to the blower motor. 

If dirt gets stuck under the wheels or the motor becomes loose, it can cause a rattling sound. Loose components such as scrap metal or screws can also cause rattling. 

Booms and Bangs

Booms or bangs could mean a dirty burner. The burner ignites the fuel to generate heat. 

If it becomes dirty, it’ll cause a delay in the ignition. A delay allows gas to build up. 

This delay causes a larger gas explosion and a boom. While it’s not dangerous, you’ll still want it repaired.

If not, it could become worse. Routine maintenance will help avoid this occurrence. 

Clicking Sounds

If the heat exchanger is cracked, you might hear a clicking sound. Heat exchangers are metal, making them contract and expand as the temperature changes. 

While the heat exchanger can adapt, over time, it can fracture. When it continues to expand, the fracture becomes worse, and the noise increases. 

This is the leading cause of residential carbon monoxide poisoning. It’s a lethal gas that you don’t want near your family. Contact your furnace experts in Montgomery imstoragetely if you hear a clicking sound. 

Scraping Sounds

You’ll want it fixed imstoragetely if it sounds like metal scraping or other scraping sounds. There could be a problem with the blower wheel. Blower wheel malfunctions can cause problems with heating your home. 


You’ll need to fix or replace a part if you hear a squealing sound. A malfunctioning blower or a frayed blower belt could cause this.

If it’s not caught quickly, it could lead to major repairs. The good news is that it’s easy to fix if caught imstoragetely. 

Why Regular Maintenance Is Vital

If your furnace malfunctions, it puts your family in danger. Regular maintenance will help avoid this. 

Your furnace will also work more efficiently. Regular maintenance will ensure that everything is running smoothly and there aren’t any strange sounds.

Well-maintained and clean furnaces will ensure parts are less likely to break. You’ll have the best air quality in your home as well. Never ignore odd sounds since they could lead to more problems later on. 

Airy Noise

While some air noises are normal, if it’s loud, you’ll want to get it checked. This noise could indicate that you have an air leak.

Check the plenum area to ensure that the seams are sealed. You might find air coming through. Use duct tape and contact your furnace expert in Montgomery. 

Identifying the Problem: Furnace Making Noise?

Is your furnace making noise? You’ll want to identify the culprit and avoid it from becoming worse.

Whether you have a problem or not, it’s vital that you have routine furnace maintenance. Avoid a problem from becoming worse and costing much more. 

Are you ready to get started and maintain or fix your furnace? Then give us a call today!

We’re located in Montgomery, AL, and perform everything from heating to plumbing. For your convenience, we also have a 24-hour emergency service. If you have any questions along the way, we’re happy to help!

Reviews & Testimonials

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My technician was Doug. I had an emergency plumbing issue and he came right out and worked diligently until the issue was fixed! I was very impressed with his professionalism and knowledge. I recommend this business and Doug! They had to come back out and fix an additional problem we found from the first instance and Brad accompanied Doug. They were both professional and completed the work in a timely fashion.


Clark’s Plumbing to save the day. Team Jeremy and Doug saved me time, frustrations, and money on upgrading our hot water heater. They were very professional, personable, and considerate of what is best for the customer. They were on time, courteous and friendly. They worked diligently and were honest. These values are hard to find in today’s environment. I really appreciate Team Jeremy and Doug. These guys are amazing.

Nicole S.

Had a leak appear by the back door. Called Clark heating and air conditioning, left a message and within five minutes had Jeremy call me back. He was out at my house within twenty minutes which was very quick. He quickly found the problem which was the ac stack, he removed the clog quickly. I was afraid it was going to be something more serious but thankfully it was simple. Awesome service and will be my go to company for a/c and plumbing. Jeremy was very professional and did a wonderful job.

Tim B.

Great experience with this company. I called Tuesday morning about my pilot light no longer working in the water heater, and Doug and Jeremy came out that afternoon. They were quick and efficient and made sure they explained what was going on and what could be done. Sadly, I needed an entire new unit, which required an electrician. Clark’s set that up as well, and I didn’t have to make any calls to get it done.

Jonathan M.

Was awoken to water pouring out of hot water heater in the hall and scrambled to find water shut off, got the water off and called Clark. Doug and Jeremy were here in under five minutes. Amazing!!! After a quick inspection they ascertained it was a ‘thermal unit’ and had us back to hot water in under 30 minutes! I sincerely and highly recommend Clark and specifically these two gentleman. We could not be more satisfied with the work and their comportment while here. True PROFESSIONALS!

James B.

Came out to service A/C after beginning membership. Couldn’t be happier, the air is running great now. Zack even took care of a wasp nest on my front porch. Very nice people and very prompt. Will definitely be using from here on!

Amanda B.

We would like to Thank the Clark Heating, air conditioning and Plumbing team members Jeremy and Doug for coming out to Tonnie Caldwell home making sure everthing was taken care of explaining everything to us about what needed to be done and was on time and very clean in doing there job and making sure we were happy in the service they provided. I will be calling you all again for any service that I may have in the future. Thanks once again.

Sheila I.

Doug and Jeremy arrived on time they both were courteous and professional took extra care wearing foot protectors and mask , could not ask for better service than these fellas performed.

Jeff W.

I called this morning for an issue with my water heater and leaky bathroom faucet. The company promptly sent out two awesome technicians Doug and Jeremy. They were prompt, professional and knowledgeable. Will definitely be using in the future and would recommend to anyone in need of service!

Bernadette E.

For over a year, I have used Clark’s to service my air conditioning system, but recently I decided to upgrade. Norah and Blake was very professional, on time, and knowledgeable. Just like Clark’s was recommended to me, I will also recommend them to someone else, because they are the best company for air and heating needs .

Rotonya S.

We recently had both plumbing and thermostat issues. Clark came out very quickly to assess our situation and even though the plumbing required a lot of work, they finished in a couple of days. Ryan with heating and air was knowledgeable and pleasant. Doug and Jeremy were patient with all of our plumbing questions, knowledgeable about the work and products, then did a great job fixing our regulator and putting in a tankless water heater.

Shelby T.

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