Simple and cheap way to bring fresh air with temperature closer to the room temperature and reduce the heating bill.
I present to you a simple way to build an air to air heat exchanger or HRV (Heat Recovery Ventilation). The advantage of heat recovery ventilation is that you introduce fresh air permanently into the house and at the same time recover some of the thermal energy of the contaminated air that is expelled.
The basic idea of all these devices is that the air that is evacuated outside by means of a separation element exchanges the temperature with the fresh air that enters. In this way less energy is needed to reheat the fresh air in winter or less energy consumed on cooling during the summer if there is a cooling system. In this video I tried to build a simplified version of a punctual heat exchanger.

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WARNING:
This video for entertainment purposes only. If you use information shown in this video or attempt to repeat anything in part or whole, you do so at your own risk. Remember your safety is your responsibility.
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