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Griggs' Dual Thermal Heating System
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In addition to remodeling their home, the Griggs family opted to install a dual solar thermal heating system. Thirty evacuated tubes provide domestic hot water year round. In the winter residual heat is routed through a fan coil unit for space heating.
This ground mounted system has heavily insulated piping to reduce losses. The evacuated tubes are automatically insulated as heat cannot move through a vacuum. Hence, any sunny day will work to provide the Griggs with hot water regardless of the temperature!

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