An apparatus to separate water droplets from an air stream, the apparatus comprising: an elongated housing defining a longitudinal axis and having a first end, a second end and an inner surface; an inlet structure positioned at the first end and defining an inlet opening configured to accept the air stream; an outlet structure positioned at the second end and defining an outlet opening; a reservoir assembly positioned at the second end of the elongated housing, the reservoir assembly configured to collect water; a helix structure positioned within the elongated housing; a first air flow path coupled in flow communication with the outlet opening; a second air flow path separate from the first air flow path and coupled in flow communication with the outlet opening, the second air flow path defined in part by the reservoir assembly; characterised in that: the inlet structure is mounted to the first end of the elongated housing; and the inlet opening is arranged along a side surface and at a radially inward directed orientation relative to the longitudinal axis; and in that the reservoir assembly comprises: a reservoir outlet segment extending outwardly from a sidewall of the elongated housing; a reservoir chamber positioned outside of the elongated housing and in flow communication with the reservoir outlet segment; and a reservoir return tube positioned external of the elongated housing and in flow communication with the reservoir chamber, the reservoir outlet segment, reservoir chamber and reservoir return tube each defining a portion of the second air flow path. an elongated housing defining a longitudinal axis and having a first end, a second end and an inner surface; an inlet structure positioned at the first end and defining an inlet opening configured to accept the air stream; an outlet structure positioned at the second end and defining an outlet opening; a reservoir assembly positioned at the second end of the elongated housing, the reservoir assembly configured to collect water; a helix structure positioned within the elongated housing; a first air flow path coupled in flow communication with the outlet opening; a second air flow path separate from the first air flow path and coupled in flow communication with the outlet opening, the second air flow path defined in part by the reservoir assembly; characterised in that: the inlet structure is mounted to the first end of the elongated housing; and the inlet opening is arranged along a side surface and at a radially inward directed orientation relative to the longitudinal axis; and in that the reservoir assembly comprises: a reservoir outlet segment extending outwardly from a sidewall of the elongated housing; a reservoir chamber positioned outside of the elongated housing and in flow communication with the reservoir outlet segment; and a reservoir return tube positioned external of the elongated housing and in flow communication with the reservoir chamber, the reservoir outlet segment, reservoir chamber and reservoir return tube each defining a portion of the second air flow path. the inlet structure is mounted to the first end of the elongated housing; and the inlet opening is arranged along a side surface and at a radially inward directed orientation relative to the longitudinal axis; and in that the reservoir assembly comprises: a reservoir outlet segment extending outwardly from a sidewall of the elongated housing; a reservoir chamber positioned outside of the elongated housing and in flow communication with the reservoir outlet segment; and a reservoir return tube positioned external of the elongated housing and in flow communication with the reservoir chamber, the reservoir outlet segment, reservoir chamber and reservoir return tube each defining a portion of the second air flow path. a reservoir outlet segment extending outwardly from a sidewall of the elongated housing; a reservoir chamber positioned outside of the elongated housing and in flow communication with the reservoir outlet segment; and a reservoir return tube positioned external of the elongated housing and in flow communication with the reservoir chamber, the reservoir outlet segment, reservoir chamber and reservoir return tube each defining a portion of the second air flow path.