Background Ventilation (Passive)
Where Should Trickle Vents Be Installed in a Dwelling?
Last Updated: 16 September 2025Trickle vents should be installed in habitable rooms, kitchens, and bathrooms to ensure adequate ventilation. While they provide a basic level of airflow, they are not the most efficient solution. Better alternatives, such as mechanical ventilation with heat recovery (centralised or decentralised), offer superior air quality, energy efficiency, and moisture control. Understanding Trickle Vents and...
Where should trickle vents be positioned on a window?
Last Updated: 16 September 2025Trickle vents should be positioned at the top of the window frame, ideally above the sash, to facilitate natural airflow while minimising draughts. However, for superior air quality and precise control, mechanical ventilation systems like MVHR or dMEV offer a more efficient and adjustable solution. Why Trickle Vent Placement Matters (And When to Consider Mechanical...
Why is my trickle vent not working properly?
Last Updated: 16 September 2025Your trickle vent may not work properly due to blockages, incorrect installation, or being closed off by occupants. Dust, debris, or paint can clog the vents, while improper positioning or sealing during installation can hinder airflow. Additionally, occupants often close trickle vents to avoid drafts, compromising ventilation effectiveness. Why Your Trickle Vent May Be Failing...
Why is there condensation on my windows despite having trickle vents?
Last Updated: 16 September 2025Condensation on windows occurs when warm, moist air inside your home meets the cold surface of the glass, even with trickle vents. Trickle vents alone may not provide sufficient ventilation to manage high humidity levels, especially in poorly insulated or highly airtight homes. Factors like cooking, showering, and drying clothes indoors can exacerbate moisture buildup,...
Why Trickle Vents Can Cause Condensation and Mould Growth
Last Updated: 26 September 2025Imagine a tiny window you’re supposed to leave open all the time to let fresh air in. That’s a trickle vent. They were designed to stop moisture building up in our homes, which causes damp and mould. But in reality, they often make the problem worse. Here’s why. 1. People Just Close Them This is...