When the cold weather arrives, many homes suffer from one of the most common problems: indoor condensation. This moisture accumulated on windows, walls and corners can end up generating mold stains, unpleasant odors and an unhealthy environment. Know how to ventilate in winter to avoid humidity It is key to maintaining a comfortable, dry and fungus-free home.
To Cervera Alumini i Vidre We are specialists in efficient windows and shutters, and we know that good ventilation combined with modern windows is the best way to prevent humidity problems. In this article we explain how to ventilate in winter to avoid humidity without losing heat or increasing the energy bill.
Why is there more humidity and fungus in winter?
In winter, the temperature difference between outside and inside is greater. Cold air has less capacity to retain water vapor, and when it comes into contact with cold surfaces (such as glass or old frames), condensation occurs. condensation.
This condensation is the origin of:
- Droplets on the windows in the morning
- Black fungus stains on the walls
- Smell of closed space
- Deterioration of paint and carpentry
The World Health Organization states that humid environments promote the proliferation of mold and can affect respiratory health.
That is why it is essential to learn how to ventilate in winter to avoid humidity correctly.
1. Ventilate every day, even if it's cold.
The best system for renewing indoor air is as simple as open the windows. In winter, many people don't ventilate for fear of losing heat, but it's a mistake: you just have to do it. 10 minutes a day.
How to ventilate in winter to avoid humidity correctly?
- Open opposing windows to create air currents (cross ventilation).
- Do it at first thing in the morning or at noon.
- Close the door to rooms that do not need to be ventilated.
With just these minutes, the air is renewed and the indoor humidity is lowered.
2. Avoid drying clothes indoors
One of the main causes of humidity is drying clothes indoors. A washing machine can release up to 2 liters of water vapor in a flat.
If you want to know how to ventilate in winter to avoid humidity, this advice is key:
- Dry your clothes in an outdoor space, balcony or terrace.
- If not possible, use a dehumidifier and ventilate afterwards.
This will greatly reduce condensation on the windows.
3. Upgrade your windows to reduce condensation
Old windows, especially aluminum ones without thermal bridging (TPT), generate very cold surfaces where condensation multiplies.
Modern windows with TPT and double or triple glazing reduce heat loss and prevent moisture from forming on the glass.
If you really want to improve how to ventilate in winter to avoid humidity, the best add-on is to install:
- Aluminum windows with TPT or PVC
- Low-emissivity double glazing
- Hermetic closures
4. Maintains a stable internal temperature
Sudden changes in temperature increase environmental humidity. Keep your home at 19–21°C with stable heating helps prevent condensation.
As recommended by’Catalan Energy Institute (ICAEN), a moderate and stable temperature is key to saving energy and preventing humidity.
5. Ventilate the kitchen and bathroom immediately after using them
Most of the humidity is concentrated in these spaces. Therefore, it is essential to know how to ventilate in winter to avoid humidity at these critical points:
- In the kitchen, turn on the extractor fan whenever you cook.
- In the bathroom, leave the door open and the window open for a few minutes after showering.
This helps expel water vapor and prevents it from depositing on walls and ceilings.
6. Use passive ventilation or microventilation systems
The latest generation windows can incorporate microventilation, a small system that allows you to renew the air without having to open the window completely.
It is the ideal solution for those who want to achieve good winter ventilation without losing heat.
Benefits of ventilating well in winter
Apply these tips on how to ventilate in winter to avoid humidity provides many advantages:
- Prevents the proliferation of fungi and mold
- Improves air quality
- Reduces allergies and respiratory problems
- Prevents damage to walls, ceilings and furniture
- Improves home energy efficiency
Ventilating is simple, but doing it right makes all the difference.
Do you want to put an end to humidity once and for all?
Now that you know how to ventilate in winter to avoid humidity, remember that ventilation is only part of the solution.
Modern, efficient windows are essential to reduce condensation and improve the comfort of your home.
To Cervera Alumini i Vidre we can advise you and install the aluminum windows with better insulation and efficiency.
Request information without obligation.