Question 1

Why not just open a window?

Accepted Answer

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

Question 2

Can I open windows while using a ventilation system?

Accepted Answer

Of course, you can open your windows with a ventilation system running. This is, however, not needed to provide ventilation, since this is done by the ventilation system in an energy-saving, hygienic, draught-free way without noise nuisance.

Question 3

How does heat recovery ventilation (MVHR) affect my energy consumption?

Accepted Answer

The energy consumption drops significantly with the heat recovery ventilation system installed. Efficient profi-air ventilation units boast a high degree of heat recovery of up to 95 %.

Question 4

Does heat recovery ventilation help me save on my heating bill?

Accepted Answer

Depending on the type of building and usage pattern, heating costs can be reduced by up to 30 to 50 %.

Question 5

Does the ventilation system swirl up dust?

Accepted Answer

Generally, a ventilation system produces far less dust than open windows, since the ventilation system filters the fresh air before it enters the building. Existing dust is not swirled up, since the constant flow of air and the air rate of a ventilation system are too low.

Question 6

Does heat recovery ventilation (MVHR) cause a draught or noise?

Accepted Answer

Professional design and installation as well as the compliance with certain stipulated air rates generally prevent draughts and noise. The star-shaped installation of the profi-air air distribution system prevents noise transmission between rooms.

Question 7

Can depositions of substances accumulate in the ventilation ducts making the operation of the MVHR system hygienically unsafe?

Accepted Answer

Virtually no particles enter the ventilation system through supply and extract air filters. In addition to this, the profi-air pipe system with its smooth, antibacterial and antistatic inner surface ensures hygienic safety – which is also confirmed by the HY certification of the profi-air pipes.

Question 8

What needs to be observed if both a fireplace and a ventilation system are installed in a building?

Accepted Answer

Wherever room air-dependent fireplaces and ventilation units are operated at the same time, special safety equipment is required to make sure that no dangerous negative pressure develops, and that sufficient external air supply is provided. It is recommended that the district master chimney sweep should be contacted as early as during the planning phase.

Question 9

Heat recovery ventilation – do I really need it?

Accepted Answer

Homes and buildings are becoming increasingly more airtight to save valuable energy. It is, therefore, all the more important to ensure a regular air exchange in order to prevent consequential excessive humidity and mould growth, as well as the decrease in the resale value of the building resulting from this. As opposed to airing by opening the window with the heat escaping through it, the MVHR system is energy-efficient due to the integrated heat exchanger, and - what is more - it prevents fine dust and allergens from entering. Our profi-air makes your home a cosy place to live.

Question 10

Why does constant air exchange convey cosy comfort?

Accepted Answer

Stale, moist and polluted air provokes weariness and headaches. Excessive carbon dioxide content robs the human system of energy, disturbs the relaxation phase and has a negative impact on our sleep. An average German spends eight hours a night in bed. The CO2 amount in a bedroom occupied by two people exceeds the limit value stipulated by the Federal Ministry of Health already after approx. two hours. profi-air heat recovery ventilation is there to ensure a constantly healthy and relaxing living climate 24 hours a day. Filtered air adjusted to a pleasant temperature creates a comfortable climate in all rooms.

Question 11

What prevents the viruses from entering the building?

Accepted Answer

Some of you are sure to be wondering whether or not ventilation units can spread or carry viruses and bacteria. The answer is NO.
Viruses mainly spread through droplets they get attached to. If the right filters are installed, the virus-carrying droplets cannot enter the rooms through the outside pipes and supply pipes.

Question 12

What prevents the viruses from spreading inside the living quarters through the MVHR systems?

Accepted Answer

The supply air and extract air ducts are strictly separated from each other. Due to this, it is nearly impossible that the extract air that may possibly contain droplets can be transported from one living area to other rooms via ventilation lines.

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