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This is Zehnder ComfoAir Q350 with enthalpy exchanger - 86% heat recovery and 73% humidity recovery. Working with Zehnder Bulgaria, we designed the ventilation …
ZEHNDER COMFOAIR350 INDOOR VENTILATION MD# COMFOAIR350-COMFO
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Zehnder comfortable indoor ventilation: Installation Zehnder ComfoAir Q - YouTube
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