We use TACO pumps in all of our solar thermal installations that require AC pumps. I like them because they are efficient, well made and easy to work with. TACO is located in Rhode Island and I have toured their factory, which is quite impressive.

The TACO 009B/F model has been our work horse for high head drainback systems. I normally install the
B
model because most code inspectors like to see that set up with a single wall heat exchanger. As long as only distilled water is used in the solar loop, then both side of the heat exchanger qualifies as a potable water system, or so I have been told.

Regardless, we like the TACO 009 pump.

Paul Thurst
Sun Volt Solar

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