Net Zero Energy Efficienct Buildings and Geothermal Heat Pumps

As the U.S. market for green building design and construction evolves, we are hearing much more lately about net-zero buildings. Homes and commercial buildings that earn the net-zero badge of honor do so by demonstrating extremely high-performance in energy efficiency. To qualify as net-zero, a building must be able to prove that its total annualiz

via Renewable Energy News – RenewableEnergyWorld.com http://ift.tt/1b5ZOZY

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