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RE: Fresh-r - Fresh and Clean air with Passive Heat Exchange
Admittedly I do not fully understand how this works. But if it can heat up the air entering your home without the use of electricity, then that is amazing. We need more sustainable devices like this. Seems like it would save a person a lot of money in home electricity costs.
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It's using a passive heat exchange, about 8km copper wire moving the warmth of the air from indoor that is blown to outside, to the air vent where the fresh air from outside is pumped indoors.