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Not known Factual Statements About scaffold
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A HRV ventilation system is very similar to balanced ventilation system only that it uses heat in outgoing stale air for warming up fresh air in the building. A typical HRV system features two fans. One fan is for taking out the household air while the other one is for bringing in fresh air. The factor that makes HRV system unique is its heat-exchange core. It is core which transfers heating from outgoing stream to incoming stream.
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