Tips for proper ventilation

If the indoor temperature dips below 20 degrees, people tend to turn up their heating. But every degree results in a marked increase in your heating bill. Simple energy-saving solutions are very welcome as a result. Just a few tweaks to everyday living can help to keep costs and energy consumption under control. During the colder months, proper ventilation and heating can ensure a healthy indoor climate.


Tip 1: impact ventilation in winter

Ventilate your rooms in short, sharp bursts – 3–4 times a day for about five minutes each time. Have as many windows open at the same time as possible. Brief cross-ventilation (a draught) – creating a flow of air through the home – is particularly effective. Avoid windows that tilt open from the bottom, as even if left open constantly, they will simply let lots of warmth escape without allowing much fresh air to enter.

Extra tip: instant results
The colder the air outside, the shorter the ventilation time required.


Tip 2: cooling properly in summer

Ventilate your space well at night and in the morning. If possible, keep your home shaded with shutters or sun blinds. 

Extra tip: prevent mould from growing in cool rooms
In cool spaces like cellars, only have the windows open overnight or in the early morning in summer so that condensation cannot form as a result of the warm air from outside.

Tip 3: proper ventilation in spring and autumn

As the temperature difference between your living space and the outside air is relatively low, the air is exchanged more slowly. As such, it’s best to ventilate your home 3–4 times a day for 10–15 minutes each time. 

Extra tip: go by the weatherVentilation is especially worthwhile if it’s raining or foggy outside, as cold air is able to absorb less moisture than warm air, and thus supports the exchange of air.


Tip 4: proper ventilation during longer periods away from home

If you’re only going to be away for a few days, you don’t need to worry about this. It’s generally fine just to ventilate your home before you go away, and then keep the windows wide open for longer when you get back. If you’re planning a longer holiday, it’s advisable to ask someone to come in and open the windows for a few minutes every couple of days.


Tip 5: proper ventilation when drying laundry

Laundry should always be dried in a drying room outside your home. However, if there’s no such room available and you need to dry your laundry within the home, we recommend ventilating the room in question more often. Make sure the doors to this room remain closed while clothes are drying in there.

Extra tip: after ironing  
Using a steam iron also brings water vapour into your home. This can contribute to mould growth, so make sure you ventilate the room briefly after ironing.

Tip 6: efficient ventilation in a Minergie-certified home

Even if you have a ventilation system for indoor comfort, it’s still advisable to impact ventilate by opening your windows, patio or balcony doors for short bursts of 5–10 minutes at a time. Having the windows open all the time will waste a lot of energy without improving the air quality.

Extra tip: clean filters regularly
Generally speaking, you should change any filters in your ventilation system twice a year. You can do this yourself as instructed by a qualified professional (caretaker, installer, etc.) or hire a tradesperson to do it for you.