To keep your apartment or your house cool, even during the heat of summer, two things are essential: insulating and airing.
Just like preventing the cold from getting into your home, your walls, your roof and your windows must be as airtight as possible in order to leave the heat outside. But you also have to guard against the sun’s rays. A window right in the sun, without curtains, without shutters, without blinds or without a protective film quickly becomes a real heating system.
Good air circulation is also vital. The residents of southern European towns and cities show us how. They keep all their windows firmly shut as long as the sun is out to prevent the hot air from coming in, only opening the windows at night to let the gentle night-time breeze cool the overheated stone walls. This is the same night cooling or free cooling principle which is used nowadays in the ventilation systems of large office buildings.
The exact same principle can be used at home: opening a basement window, the entrance doors and a roof window will allow a draught of cool air to come flooding in that will cool the house from top to bottom.
|Airconditioning takes a substantial chunk from the budget. Fortunately there are cheaper alternatives which are also less harmful to the environment.|
Some solutions to improve the energy performance of your home cannot be improvised. So, for summer next year, remember to plan the works:
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