We’ve all seen it happen before. When warm, humid gas touches anything even a fraction of a degree colder than itself (i.e. dew point), it cools and generates condensate. We see it often in conventional breathing tubes made of thin, dense plastic: their surfaces are easily cooled by the outside air, resulting in unpleasant “rain-out”.
The AirSpiral heated breathing tube for Airvo 2 utilizes an advanced two-spiral design to help
protect against condensate.