I'm adding more heat exchangers to the solar heating system. This system captures the sun's energy in hot water, and sends it to the radiant floor in my garage/shop. However, the heat exchanger is the weak link. I'm going to upgrade it to capture more of the sun's energy.

Playlist, garage build:    • Garage Workshop DIY Super Insulated R...  

Video, reusing PEX fittings:    • Reusing Uponor Wirsbo Pex Expansion F...  

PEX Expansion Tool: http://amzn.to/2E8AyAH

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