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Ward’s Heat Exchanger

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This is an interesting idea. It is designed to heat up water going to the hot water heater by extracting heat from waste water. Basically, when your dishwasher is flushing hot water down the drain, the heat exchanger is grabbing the heat and pre-heating the water going to your hot water heater. It is a simple and easy to recreate design. Ward is putting these together and selling them on the internet.

He says that he’s selling a version that he has modified to fit most waste pipes for $275 plus shipping. They go for around $500 on eBay. He says there is an amazingly good ROI. He’ll have a web page up soon.

You can contact Ward about it at

h-exch

h-e

Oh boy, I think I might get plumbing stuff for Christmas.


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