How condensation forms
When warm, moist air meets a colder surface, such as a window or an external wall, it cools and the moisture condenses into water droplets. Where this happens regularly, it can lead to damp patches and mould growth.
The role of ventilation
Mechanical ventilation systems remove moist air from kitchens and bathrooms and, depending on the system, supply fresh air to the rest of the home. A system that is working correctly helps to keep humidity at a reasonable level.
Over time, blocked filters, dirty fans or faults can reduce the amount of air a system moves. Condensation that returns after a period without problems can be a sign that the ventilation system needs attention.
Signs that a system may need attention
- Condensation forming on windows, particularly in the morning
- Steam lingering in bathrooms after showering
- Black mould appearing on ceilings, window reveals or behind furniture
- A unit that has become louder or has stopped running
- A filter warning on the system controller
Other causes
Condensation and mould can also be caused or made worse by other factors, including heating patterns, drying clothes indoors and building defects such as leaks or rising damp. Ventilation is one part of the picture, and where a problem appears unlikely to be caused by the ventilation system, our engineer will advise you accordingly.
How we can help
We can service your existing system, diagnose faults and advise on improvements. Please see our services or request a quote to discuss a specific problem.