[Greenbuilding] Copper Cricket?

[Nick Pine]

Mary Bull writes:

> Evidently, there was a product called the copper cricket on the market 
> several years ago. The company has since gone out of business. This heater 
> worked like a precolating coffee pot with no moving parts. The panels on 
> the roof percolated a fluid to the water heater in the house with no 
> moving parts or electronics. They went out of business because of lack of 
> demand. Does anyone have any leads on where to find the people who 
> invented or sold the copper cricket? The Internet didn't produce any 
> results.

Didn't we do this already?

Nick