When is the best time to ventilate your house in winter? Find out when to open windows in the cold.

Opening your windows in winter may seem counterintuitive when you're trying to keep your interior warm. Yet, it can help reduce your heating costs. Here's why:

Disposal of moisture: An air that is too humid is more difficult to heat. By renewing the air, you make it easier for your heating system to work.
Heat conservation: Walls, furniture and floors do not cool in just 10 minutes, limiting heat losses.

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