Trane International Inc.

Curtis Mitchell

Richard Lee Jameson

Thomas Gort

Zubin Varghese

John Bailey

Yogesh Pandit

Kevin Joseph Ligi

Shiva Prasad Keralapura Basavaraju

Lance Lindenburg

Chris Fuller

Example embodiments of the present disclosure relate to improved HVAC devices and kits for HVAC devices that improve the sound attenuation associated with the device, particularly low-frequency noise. An example embodiment includes an improved furnace including a housing with a combustion air chamber, a heat exchanger chamber, and a circulation blower chamber, wherein the combustion air chamber comprises a burner assembly and a combustion air fan, the furnace also includes a sound attenuation layer including a first acoustic metamaterial layer coupled to the combustion air chamber and tuned to attenuate sound for a first frequency band, one or more housing openings fluidly connecting the combustion air chamber to an environment outside the housing, wherein the sound attenuation layer includes a discontinuous section that aligns with one or more of the housing openings.

Sound attenuation for HVAC devices

Growing community of inventors

Manasass, VA, United States of America

Curtis Mitchell