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by sten 3351 days ago
Is this really free? Doesn't it just lower the efficiency of the AC unit?
3 comments
detaro 3351 days ago
Why would it lower AC efficiency? It doesn't use the exhaust air for anything. (Obviously you shouldn't block it)
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Cerium 3351 days ago
No, the fans are quite strong and have an effect up to a couple meters away. I think it is more like a cat sleeping on the hood of a car. The waste heat needs to go somewhere, might as well put it in my clothes.
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eximius 3351 days ago
They hang it near, not on top of the vent. And if the exhaust is outside the unit (balcony, etc), it would have basically no effect.
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