 John Ruhnke, owner
of JR's Plumbing & Heating, is a Past President of the Inventors Association of Connecticut
(IACT). We have developed an air eliminating circulator for a hot water heating system called the
Autopurger. We have built three working prototypes (See picture). John Ruhnke has received
two patents. Other patents are pending. Click on Global Warming below to find
out about our latest invention projects
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