You must avoid this mistake when heating and ventilating | March 22, 2025

Save on heating costs: Why you should close doors when heating
Winter is here and with it the need to heat your apartment or house. The question often arises whether you should leave the room doors open or close them. In this article you will learn why it is better to keep doors closed when heating.

Why closed doors are important when heating
Closed room doors help keep the heat in the heated rooms. If the doors remain open, the warm air can escape into unheated rooms, which leads to wasted energy. If you close the doors, the heat stays in the rooms where it is needed and heating costs can be reduced by up to 5%.

Preventing mold growth
Another benefit of closed doors is preventing mold growth. When warm air enters unheated rooms, the moisture it contains condenses on the cold walls. This creates optimal conditions for mold growth. By keeping the doors closed, you protect your apartment from this structural damage.

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