Soundproofing your HVAC unit can be difficult because the ductwork connected to it is buried deep within the home’s structure. Nevertheless, you might have to deal with the noise since the HVAC system not only generates noise but also transmits noise from one room to another. Its ductwork functions as a path for sound to travel, creating a “highway” of noise throughout your home.

There are various methods for soundproofing your HVAC system. Listed below are several ways to effectively lower the amount of noise emanating from your vents.

1. Sound Absorption Foam

An acoustic foam helps reduce echoing. The foam absorbs sound waves as they travel through the air, preventing them from producing an echo. This material is not intended to block out noise; instead, it is designed to improve the sound quality in a room, which is why recording studios and movie theaters frequently utilize acoustic foam.

For HVAC systems, acoustic foam can be an efficient means of noise reduction because these systems generate a great deal of echo, especially if they are made of metal. This material can absorb the echoes that pass through the vents, thereby reducing the quantity of unwanted sound entering the place you’re attempting to soundproof.

2. Create a Sound Baffle or Maze

A sound maze is among the most effective methods for soundproofing straight sections of ductwork. A good maze will not prevent air from passing through the vent; therefore, ventilation will not be a problem, but it will effectively deaden undesired sounds.

A sound maze, which comprises soundproofing materials placed along the duct walls, creates multiple surfaces within the duct, and soundwaves must bounce off these surfaces before entering your room. Therefore, the noise produced will be drastically reduced. Despite its effectiveness, though, creating a good maze can be laborious. We recommend calling Lumberjack HVAC to get the job done efficiently and correctly!

3. Closing Your Air Vents

Additionally, you can use a sealant to limit the transmission of soundwaves through your air vents. We endorse using expanding foams for this procedure to fill the gap more effectively.

Apply a substantial amount of sealant to the interior of the relevant air vent. After applying the sealant, it will expand to fill every accessible gap. Wait a few minutes to determine if you must use additional sealant. Once the sealant hardens, the air vent will have an airtight seal. Then, using sandpaper, smooth the sealant’s surface and change the position of the vent cover.

4. Place Duct Liners

If you don’t wish to upgrade or there’s nothing wrong (other than the noise) with your system, installing duct liners can be a very inexpensive and straightforward form of sound insulation. These liners are made of an insulating substance that absorbs noise transmitted through the air vent’s inner walls.

Double-sided duct liners are attached to the interior walls of your air vent. This prevents the liner from releasing glass wool fibers into the room when air is circulating.

5. Use Flexible Ducts

Because they contain bends, a flexible duct can limit the quantity of sound that escapes from your air vent; the sound is partially absorbed in each curve. Even though they are excellent for soundproofing, you should only use flexible ducts when necessary.

The main disadvantage of using these ducts is that they can contain microscopic holes that allow sound to escape and impair their soundproofing effectiveness. This is why you should only use them when it’s essential, preferably in quieter environments where sound cannot enter and travel down the duct.

6. Inspect Your HVAC System

The noise coming from your air vents could be because of a faulty HVAC system. If you hear a lot of pounding, thumping, buzzing, and other similar noises, a malfunctioning HVAC system may be the cause.

Contact Lumberjack HVAC to get your system evaluated. If there are any problems with the design, we will diagnose the issue and perform the required repairs. Not only can repairing your HVAC system help eliminate annoying noise, but it might also increase the system’s efficiency, extend its life, and cut your power expenses.

Find Professional Help

It’s always advisable to get professional help when dealing with HVAC issues. If none of these options appeal to you, or if the length and size of the ducts require significant adjustments to execute these approaches, then it’s better to seek expert assistance. Lumberjack HVAC will assess your individual needs and recommend the most effective solution. Our team offers a full range of heating and cooling services in Brighton and the surrounding area. Give us a call today to set up an appointment.

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