Noiseless ventilation is a blessing in the office. The most quiet equipment in the room will be the ventilation if FilConAir is applied, because you cant hear it. Still when too warm temperature in the room just experienced to be too warm you get the right temperature in minutes faster than any system. All at no noise or draft. Meeting room is not having problems being to warm at any time or if so adjusted in minutes again without any drag or noise. Work efficiency is held on top in all workspace.