Can Sound Absorbing Mats Reduce Noise from Central Heat & Air Units?

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Discussion Overview

The discussion centers around the potential for sound-absorbing mats and other methods to reduce noise generated by a central heat and air unit, particularly when it is enclosed in a closet-like area. Participants explore various approaches to mitigate the loudness of the blower unit, considering both passive and active noise reduction strategies.

Discussion Character

  • Exploratory, Technical explanation, Debate/contested

Main Points Raised

  • One participant inquires about the possibility of installing a noise-canceling unit to muffle the sound of the blower unit.
  • Another participant suggests that adding sound insulation inside the closet may be a viable first step before considering active noise cancellation.
  • A different participant proposes using dampening supports to reduce mechanical coupling between the equipment and the home's structure.
  • It is noted that the noise is primarily generated by the blower wheel moving air.
  • One participant mentions that the fan compartment and possibly some ductwork could be lined with sound-absorbing materials to further reduce noise.
  • A later reply indicates that the original poster plans to try sound-absorbing mats in the unit's enclosure as a solution.

Areas of Agreement / Disagreement

Participants present multiple approaches to addressing the noise issue, but there is no consensus on the best method. Various strategies are proposed, and the discussion remains open to further exploration of these ideas.

Contextual Notes

Some suggestions depend on the specific characteristics of the unit and the surrounding environment, and the effectiveness of proposed solutions may vary based on these factors.

Marty Stanhibel
I have a central heat and air unit enclosed in a closet like area and it is very loud in my living room,
is there a way to install a noise cancelling unit to muffle that sound of the blower unit?
 
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Marty Stanhibel said:
I have a central heat and air unit enclosed in a closet like area and it is very loud in my living room,
is there a way to install a noise cancelling unit to muffle that sound of the blower unit?
Welcome to the PF, Marty. :smile:

Active cancellation might work, but have you considered adding sound insulation to the inside of the closet? You might try that approach first, and then try adding active cancellation if the insulation does not help enough.
 
And you could consider mounting the equipment on dampening supports, to lower the mechanical coupling to your home's floor and walls...
 
The noise is generated by the sound of the blower wheel moving the air..
 
Thanks everyone, I will locate some sound absorbing mats and line the units enclosure and see how that goes.
 

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