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Why not just open a window?

To ensure sufficient, hygienically sound air exchange, some five-minute-long airing out in intervals of about every two hours is needed. Permanently tilted windows do not constitute a proper solution for reasons of fluctuating temperatures, draughts from outside, and significant energy loss.

profi-air heat recovery ventilation boasts decisive advantages:

  • Constant supply of fresh air
  • No noise pollution
  • No exposure to humidity / mould
  • Filtration of dust and allergens
  • No odour pollution