HUSHCORE® High Performance Rooftop Unit Noise Control Designs address system based problems associated with curb mounted downflow packaged air handling equipment.
Acoustical Curb Designs for high performance projects are integrated solutions that address all transmission paths. Dialogue early in the design process allows the necessary coordination of curb acoustical elements with building ductwork. High Performance HUSHCORE® Systems usually have optimized acoustical and aerodynamic performance in the form of scheduled sound pressure levels by octave band for the unit/curb assembly and often are customized to meet specific target NC levels in critical building spaces.
Each of the High Performance Systems is rated in four categories from Fair to Best. Guide Specifications, Details and Data Sheets are available for each case.
Whisper™ P System

HUSHCORE® WHISPER™ Type “P” SYSTEM
MODEL HPC-DS-33-P
HUSHCORE® RTU System |
HPC-DS-33-P |
Radiated Sound |
Good |
Vibration Isolation |
Very Good |
Fan Noise |
Fair |
Duct Breakout |
Fair |
HUSHCORE® WHISPER™ Type “P” SYSTEM
MODEL HPC-DS-49-P
HUSHCORE® RTU System |
HPC-DS-49-P |
Radiated Sound |
Very Good |
Vibration Isolation |
Very Good |
Fan Noise |
Fair |
Duct Breakout |
Fair |
Whisper™ E System

HUSHCORE® WHISPER™ TYPE “E” SYSTEM
MODEL HPC-DS-33-E
HUSHCORE® RTU System |
HPC-DS-33-E |
Radiated Sound |
Fair |
Vibration Isolation |
Very Good |
Fan Noise |
Very Good |
Duct Breakout |
Very Good |
HUSHCORE® WHISPER™ TYPE “E” SYSTEM
MODEL HPC-DS-49-E
HUSHCORE® RTU System |
HPC-DS-49-E |
Radiated Sound |
Very Good |
Vibration Isolation |
Very Good |
Fan Noise |
Best |
Duct Breakout |
Very Good |
Whisper™ V System

HUSHCORE® WHISPER™ TYPE “V” SYSTEM
MODEL HIC-DS-41-V
HUSHCORE® RTU System |
HIC-DS-41-V |
Radiated Sound |
Good |
Vibration Isolation |
Very Good |
Fan Noise |
Good |
Duct Breakout |
Good |
HUSHCORE® WHISPER™ TYPE “V” SYSTEM
MODEL HIC-DS-52-V
HUSHCORE® RTU System |
HIC-DS-52-V |
Radiated Sound |
Best |
Vibration Isolation |
Very Good |
Fan Noise |
Good |
Duct Breakout |
Good |
Ultra System

HUSHCORE® RTU System |
Custom |
Radiated Sound |
Excellent |
Vibration Isolation |
Excellent |
Fan Noise |
Excellent |
Duct Breakout |
Excellent |