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How to heat and ventilate your home correctly

Find out more about this topic, pick up some useful tips and save money. First, here is some important general information. 

Air and its absorbency

  • Cold air absorbs little water
  • Warm air absorbs a lot of water

‘Steaming up’ of windows and walls is caused by warm, moisture-laden air coming into contact with cold surfaces and forming condensation. This happens mostly in the winter months.

How and where does mould arise? Mould spores can be present indoors at any time. If the inner walls are cold and there is excessive humidity in the room, these spores will be attracted to the window frames and corners of the room. This encourages the growth of mycelia which then form the visible mould.

It is therefore important:

  • to make sure your furniture is not directly in contact with the wall (minimum gap of 5cm)
  • not to place furniture or attach panels directly in front of radiators
  • to avoid installing furniture units that cover the whole of an external wall

The following guidelines apply to your central heating:

  • Ensure that all rooms are kept continuously heated
  • Measure humidity levels with a hygrometer and regulate as necessary by means of ventilation
  • Turn off the heating while ventilating your home

The following guidelines apply to ventilation:

  • Ventilate (air) your home several times a day for five to ten minutes
  • Open windows at opposite ends of your home to create a through-draught (weather conditions permitting)
  • Areas that generate a lot of moisture (bathroom, kitchen, bedrooms) need more ventilation
  • Switch off the heating while airing your home

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