Skip to main content
No. of Recommendations: 2
Remember that solar hot water has a higher payback than PVs. A few companies are going to PVT designs - these cool the PV, raising efficiency, and the heat extracted goes to DHW or building heat. One new development, where applicable, is storing excess summer heat in the soil under a building. Much escapes, but it allow larger collectors to be economic, and it cuts heating bills, in late fall and early winter.

A variation some of us in the Dakota states are using is fans blowing summer air through the basement into the house, with dehumidifiers. The amount of heat return is low - but that cheap system is paid back through reduced summer cooling bills - very nice ROI. In our case, with a very old house, a nice byproduct is that we don't have trouble with frozen pipes anymore. Note that for the first few years, almost all the return will be in the form of reduced cooling bills - it takes time to warm all those tons of soil by this simple means.
Print the post  


What was Your Dumbest Investment?
Share it with us -- and learn from others' stories of flubs.
When Life Gives You Lemons
We all have had hardships and made poor decisions. The important thing is how we respond and grow. Read the story of a Fool who started from nothing, and looks to gain everything.
Contact Us
Contact Customer Service and other Fool departments here.
Work for Fools?
Winner of the Washingtonian great places to work, and Glassdoor #1 Company to Work For 2015! Have access to all of TMF's online and email products for FREE, and be paid for your contributions to TMF! Click the link and start your Fool career.