And this is where the problem starts.
Having a furnace closet system at home has many benefits but it generated very annoying noise which is sometimes very irritating.
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Many homeowners are still unaware of how to soundproof a furnace closet. It can be very hard to sleep in a noisy home. A lot of people spend a lot of money on a new furnace or air conditioner but forget to look at the other aspects of their home.
A furnace closet is one of these items. If you’re looking to soundproof your furnace closet, there are several ways you can do this. In this article, I will show you how to soundproof a furnace closet in an easy and cheap way.
The benefits of soundproofing your furnace closet include keeping the noise level down and keeping your home quieter and more comfortable. It also helps to prevent the furnace from being a distraction.
Here, I’ve shared 7 self-applied easy, and cheap ways to soundproof a furnace closet in your home. In this article, we don’t talk about past outdated methods, but we are going to utilize some helpful new tools and innovative ideas to soundproof our furnace closets in 2023.
You can reduce the noise coming from the furnace closet to some extent by adding some mass to it.
Many people wonder about how to do that…
The question is pretty obvious as adding anything like plywood, some sheets, etc don’t work. You need to put some good sound-absorbing materials for this purpose.
I would highly recommend using some soundproofing blocks or acoustic panels. My personal choice is the acoustic panel. It will cost you a little bit high but is worth investing in.
If you have a budget problem then I’ve some suggestions in the budget category such as you can use some thick carpets, clothes, etc to add mass to your furnace closet.
I will tell you why the acoustic panel is my favorite choice.
The acoustic panel is made of a timber frame. It has a number of layers of acoustic foam which make it very effective for soundproofing projects.
One of the main benefits of acoustic panels is that they can be installed with minimal effort and little disruption to the existing structure.
This is the first possible way to soundproof a furnace closet, and It is effective to reduce noise to some extent. To reduce noise in a better way let’s move to the second step.
Drywall helps to absorb the sound waves and helps to reduce unwanted noises in your room. I have noted that many professionals recommend using drywall in the room for soundproofing. You can also use it for soundproofing your furnace closet and room.
You can use drywall with your furnace closet in two different ways:
If you want to add drywall layers inside the furnace closet then make sure it has enough space to do so. First, measure the internal space to ensure you can add drywall layers successfully.
If you encounter insufficient space inside your furnace closet then you can build an external drywall box that can be installed just outside the HVAC system.
It is better to take professional help for this task because the drywall box must be ventilated properly, and it is designed in such a way that allows easy access inside the HVAC system for service.
Make sure the gap between the Furnace closet and external drywall box is filled with insulation material for better soundproofing.
The noise coming from the furnace closet is really annoying and one of the major factors behind this irritating noise is the vibration.
If you do proper soundproofing of the floor then you can minimize them effectively. I shared my method to soundproof the furnace closet floor. Just put some thick carpets on the floor of your furnace closet.
This is a cheap method that really works to minimize the vibrations and grumbling which make an annoying noise.
Carpets also block the gap between the furnace closet door and the floor which also help to minimize the intensity of noise.
But most people don’t have lots of carpets in their homes and don’t have any budget issues. They can buy some anti-vibration pads and put them on the floor. These pads are used in the washing machine to reduce vibrations and noise of it.
Benefits of using carpets and anti-vibration pads on the floor of the furnace closet:
Note: Installing the anti-vibration pad on the furnace floor is a tedious job for most homeowners because you have to remove the furnace first.
Many closet doors are not good in sound detention due to their hollow core structure and it is advisable to buy new modified doors for your furnace closet for better soundproofing.
But if you don’t willing to spend much on furnace closet door soundproofing then I’ve some other cheap ways to make the closet doors heavy.
Gaps, cracks, and holes are good friends for noise and allow it to pass through them. Identify the location of all the gaps, crack, and holes and fill them properly for better soundproofing.
You can find them in the following locations:
People often neglect the gap between the top and bottom of the door, but it is very important that they are tightly packed when you close the door. To do so you can put the carpet at the bottom and some extra layers of wood at the top.
You can fix them using cement, caulking, and using some good-quality adhesives. All the noticeable gaps can be filled using some good noise-proofing Sealants.
Advantages of using noise-proofing sealant:
Furnace vibration is not just an issue when it comes to keeping your home warm. When the furnace is running, the exhaust fan can cause vibrations that make it difficult to sleep.
The best way to prevent this is by using a vibration mount. These are rubber pads that attach to the wall and are designed to dampen the vibrations caused by the fan.
Putting down the furnace system is really a tough job for the installation of the new mount system. Many homeowners are not familiar with this task and require professional help.
If there is some fault in your furnace system then you will hear some abnormal noises coming from the furnace closet. Some noises require the furnace’s expert’s attention.

I’ve listed some creepy noises that coming from your furnace closet which indicate that your furnace system has some technical problems which need the immediate attention of a qualified technician:
Check the noise level of your furnace closet by using a sound meter, and identify the source of those noises, which irritate you and your family. It might be the closet, or the furnace itself. Normal noise issues can be solved by soundproofing the furnace closet.
Finally, I’m going to bind up this article after giving some proven and self-applied soundproofing tips so that you don’t bother soundproofing your furnace closet yourself.
You have to read the full article to understand some core information to soundproof your furnace closet. Thicken the wall, covering the floor, and adding mass to the closet system are some best ways to get rid of unwanted noise coming from the furnace closet.
You can also do your own research but it takes a lot of time, soundproofing is fun but takes time and money. You can also consider visiting a professional to take care of the process for you.
Ans: No, you are not able to soundproof any room completely, but you are able to soundproof it as much as it won’t bother your sleep, your work, or your day-to-day life. I’ve mentioned some best ways in this article to soundproof the furnace closet effectively.
Ans: There are many reasons behind this problem some are, there are technical problems in the furnace system, the closet where it is installed is not properly soundproof, and many more. If your furnace system runs too loud then you have to service it as soon as possible.
Ans: The cost of soundproofing the furnace closet varies based on how large it is and which kind of soundproofing material you are using. You can expect to pay between $100 and $500 to soundproof the furnace closet.
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