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Send Message. Everest Solar Systems is dedicated to advancing solar energy installations throughout North America by offering cutting edge mounting systems for solar technology. We are a member of K2 Systems International Group, one of Europe's market leaders in mounting systems, with more than 3 GW installed.
There are two types of active solar water heating systems: 1  Direct circulation systems. Pumps circulate household water through the collectors and into the home. 2  Indirect circulation systems. Pumps circulate a non-freezing, heat-transfer fluid through the collectors and a heat exchanger.