Abstract: An air conditioning module comprises an insulated casing separated into a first air chamber and a second air chamber by an insulated divider. The first air chamber provides a sealed air passageway along the outside of a sound isolation enclosure and between two spaced locations of an inside of the sound isolation enclosure. The second air chamber provides a sealed air passageway between two spaced locations of a room within which the sound isolation enclosure is installed. The air conditioning module has an intake and an exhaust that form the two spaced locations of the second air chamber. Disposed between the intake and exhaust and within the second air chamber is an air circulation means and a condenser unit of a heat exchanger. The air conditioning unit further includes an inlet connector and an outlet connector arranged to seal to an outlet aperture and inlet aperture of the sound isolation enclosure respectively.

Abstract: A ducted unit including a sound-insulated housing having a sound absorption coefficient of at least 0.05 W/m2 at 100 Hz and wherein the sound-insulated housing contains an air circulation unit to draw air through the ducted unit, wherein the air circulation unit is operated to spin between around 1200 and 750 revolutions per minute.

Abstract: A ducted unit having first and second outlets wherein the first and second outlets are connected to each other by outlet ducting to form a closed loop, the outlet ducting having at least two spaced apertures for ejecting air within the outlet ducting at substantially constant pressure such that the air pressure within the closed loop outlet ducting is substantially equalized such that the outlets operate at a substantially constant pressure.