Drain Heat Recovery Device: GFX

Approximately 80-90% of all hot water energy goes down the drain, carrying with it up to 955 billion kWh of energy in the US alone. The GFX is a device that reuses the heat from hot water going down your drain, and uses it to preheat water going into your hot water tank. Its operation is based upon a natural phenomenon whereby surface tension and gravity create failing water films. They say it'll recycle 60% of your heat, and it has no moving parts or parts to clean, so nothing to maintain or pumps to keep running. :: GFX Technology [by Justin Thomas]

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