Passive Vapour Vent MK2

The Passive Vapour Vent MK2 contains a permeable membrane within the main plastic circular tube. This encourages moisture migration due the differences between external and internal temperature and air pressure. The membrane acts as a molecular sieve, allowing water vapour to pass to the outside whilst resisting rapid air movement and therefore heat loss. The vent is also fitted with a specially designed cowl which counteracts the detrimental effects of external wind on performance.

Features and benefits:

• No moving parts.
• Works passively 24 hours a day (a passive dehumidifier).
• Quiet operation (generates no noise).
• Low installation cost.
• Available in standard, extendable or high rise version.
• Reduces draughty air flow and heat loss.
• Works at peak condensation times.
• No night time disturbances from compressors or fans.