REHAU announces its new REHAU ECOAIR ground-air heat exchange system, which is said to provide improved indoor air ventilation, enhanced energy efficiency and increased comfort in alignment with fresh air requirements of today’s tighter building envelopes. Besides directly reducing the energy required to heat or cool incoming fresh air, the system also lowers relative humidity during periods of cooling, and hinders condensation from freezing in heat recovery ventilators (HRV) during the heating season.

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