This first edition of HVAC Sound and Vibration was developed to provide in-depth, HVAC-specific guidance in the art of sound and vibration measurement and mitigation. As building construction has become lighter and tighter, sound and vibration that previously may have gone unnoticed is more often becoming a nuisance. This creates both a problem and an opportunity - a problem because designers and installers must be diligent in using materials and techniques that mitigate the potential for sound and vibration problems and an opportunity for contractors that specialize in resolving occupant complaints related to sound and vibration.