REHAU’s new ECOAIR™ ground-air heat
exchange system capitalizes on the consistent ground temperatures found 5
to 7 feet underground, which pre-warms in the winter and pre-cools in
the summer fresh air for the indoor ventilation system. The system
reduces energy usage for heating and cooling, lowers relative humidity,
and hinders condensation from freezing. It also features an
antimicrobial inner layer and is customizable for a variety of sizes.
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