Looking for more on solar water heaters: diy builds, batch heaters, evacuated tubes, solar thermal, installation? These sites cover related topics and are worth a look.
DIY Home Solar
Home solar planning and decisions for homeowners.
Generator Noise
Generator sound levels, quieter choices and safe noise reduction.
SolarGeneratorGuide.org
Solar generator and portable power station guides, explained clearly.
Solar Water Solutions
Choosing solar water heating and other solar water solutions.