VRF Noise Control
Using plenum silencers and an acoustic roof screen system to mitigate noise from rooftop VRF units.
The Project Facility
A high-rise residential building located in a densely-populated urban area
The Noise Source
Rooftop VRF units
12 PMA-3-36L-24PL Rectangular Plenum Silencers
PMA ArcMod RT Barrier
General Contractor: Multiplex Construction Canada Ltd.
Owner: CentreCourt Developments
Acoustic Consultant: Thorton Thomasetti
Reason for Mitigation
Compliance with provincial and municipal ordinance for exterior noise emissions
Limited Site Access
We installed a series of modular plenum silencers to mitigate discharge air noise from the VRF units.
The design required close collaboration with the equipment OEM to ensure the equipment functioned to the manufacturers’ specifications and remained serviceable once our sound attenuation components were installed.
To further limit sound emanating from the system intake, we erected a customizable PMA AcoustaMod rooftop barrier around the perimeter of the VRF unit—a critical addition given the positioning of the component directly adjacent to the building’s rooftop terrace. Pre-finished materials for the roof screen system were selected to match the condominium’s façade, while our factory-assembled, modular process allowed us to mitigate the need for an on-site crane during the installation process.
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