HVAC Noise Reduction

We chose to collapse all the various HVAC soundproofing projects into a single page, as most of them are common to the overall sound issues you may be experiencing, and the means by which to resolve your noise.   HVAC noise centers around mechanical airflow stemming from furnace rooms and air conditioners, to ducts that transport that airflow.   The soundproofing treatments shown here all center around NetWell’s line of sound barrier products designed to lower your level of exposure.

Questions?   Call 1-800-638-9355

Mechanical Room Noise Control

Loud mechanical rooms can include furnace rooms, elevator shafts, control rooms, computer rooms or rooms that house stationary noise sources such as generators, compressors, dust collection, or pump rooms.   The goal with these HVAC soundproofing treatments is to contain the noise to within the room and protect against the bleed of the noise out.   Step 1 with these projects is to line the perimeter walls and ceiling, where applicable, with a set of QBS Sound Barrier Blankets.   The blankets can be customized to match the profile of your common surfaces, including any cutout as needed.   They are class A fire rated and work great to hold the noise to within your mechanical room.


industrial noise reduction with sound barrier blankets

Featured Product for HVAC Soundproofing

Sound Barrier QBS Blankets are class A fire rated and the ideal choice for isolating mechanical noise to within a room.   They can also be cut to match the dimensions of any framing built around your noise source, and serve as a sound barrier enclosure to your stationary noise source. QBS Blankets are cut to size, with velcroed seams for interconnection, and grommets for quick and easy installation and access.   Averaging 12-18 dB drops, the blankets are popular for a wide variety of HVAC noise in the commercial, industrial and residential markets.

Questions?  Call 1-800-638-9355

See QBS Blankets

Noise Reduction for Drain Pipes and Loud Ducts

NetLag Soundproofing Wrap is a sound barrier lagging material that ships to your project site in 54″ x 30′ rolls.   This material is designed to wrap like a sound barrier jacket around your duct work to hold the noise to within the duct.   This external wrap can also be jacketed around drain pipes.   Noise control projects that target the HVAC industry are all unique based on their starting points, but it is quite often our clients will combine the the Sound Barrier QBS Blanket application with the NetLag Soundproofing Pipe Wrap to help minimize leakage and escaping noise, such as with a dust collection system.

duct wrap for soundproofing ductwork
Sound control lagging for wrapping duct and drain pipe



Outdoor HVAC Noise Control

While the Sound Barrier QBS Blanket system is ideal for isolating noise inside your building, we upgrade for exterior treatments to the Outdoor Sound Barrier QBO Blankets.   These are basically the same sound barrier curtain system, with an upgraded skin designed to repel the weather elements.   QBO Blankets are ideal for affixing to framework built around stationary noise sources such as air conditioners, generators, outdoor pool pumps, and a variety of other stationary noise sources outdoors   The QBO Blankets are also ideal for temporary sound barrier walls at construction sites.

Questions?  Call 1-800-638-9355

See QBO Blankets
outdoor sound barrier panels

HVAC Acoustic Sound Panels

In addition to the sound barrier blanket and lagging products designed to deaden sound transfer, there are times when mechanical noise requires more sound control within the room the noise is being generated from.   An example would be a computer rack room with employees sharing the same space.   Here, the goal would be to control the exposure to echoes, more than blocking original sound.   And for this application, we introduce you to the popular Melamine Acoustic Foam Fireflex Panel.   This is a class A fire rated foam panel that can be cut/pasted to the interior walls of your mechanical room to further deaden the exposure levels to noise.

See FireFlex
indoor gun range soundproofing with acoustic foam panels

Soundproofing for HVAC:  Q&A

What is HVAC Noise?

Any noise that stems for the heating, ventilating, air conditioning or plumbing of a space.   Noise is generated by liquid flow or air flow passing through a vessel, emanating out into a room, or noise generated mechanically by stationary noise sources such as furnaces and air conditioners.   In all of these cases, generating more control over your noise levels requires producing more control over the source of the noise and soundproofing the vessels that carry the air or liquid flow.

How do I solve drain pipe noise?

Wrapping drain pipes with a sound barrier jacket will help to deaden the noise vibrating through the walls of the pipe and bleeding out into a room.   NetLag is the ideal soundproofing membrane for this acoustic treatment.   Simply wrap the drain pipe with NetLag and block the noise from bleeding into your room.

How to soundproof a loud air conditioner?

For loud air conditioning units, stationary and outdoors, build a simple frame around the unit structurally, and have us cut a corresponding set of weather resistant sound barrier QBO Blankets.   These noise control blankets withstand the weather, are easy to affix to your frame, and can help deaden up to 90% of the noise you or your neighbors are experiencing.

How to soundproof a furnace room.

Furnace rooms, as with any mechanical room, commercial or residential, can be treated by anchoring a set of sound deadening noise control QBS Blankets against the common walls inside the mechanical room.   We will custom cut them to match the cavity size, and can ship a field stitching kit along with it for any cutouts you might need for pipes and ducts feeding into/out of the mechanical room.   The blankets are class A fire rated, and block up to 90% of your furnace noise.

I have noise whistling through my ducts.  What can I do?

This depends.  If the noise is vibrating out through the walls of your ductwork, such as a duct running across the ceiling of your space and spilling noise down into the room….then the answer is easy.  Simply wrap the duct with the NetLag Sound Jacket material and you will be holding the noise to within the duct, protecting the room from the rush of air.   But, if your noise is stemming from that airflow spilling out through the mouth of the vent, then there’s less you can do to retrofit to your existing problem.   There are options, best to contact our help desk at 1-800-638-9355.

Sign Up for Startsmart

StartSmart for HVAC Noise

Many of our clients enjoy this simple, easy to read email course that teaches you how to control the costs associated with your upcoming noise control project. Filled with insider tips and techniques of the sound panel trade, we pass the knowledge on to our clients in hopes to control their costs as well as their noise. Sign up today and get started!

Quoting Your Project

Controlling noise related to HVAC is most always a customized project.   Step 1 would be to call our help desk at 1-800-638-9355 and feed us the dimensions of your project.   From there we can design the framework for your treatment and quote your project back.

Get Room Analysis

Your Room Analysis

Depending on the HVAC noise you are experiencing, either submit back the dimensions of the room experiencing the noise….or call better yet, call our help desk at 1-800-638-9355.