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