Are you still freezing or are you already ventilating – with heat recovery?

Rules of thumb against the spread of the virus

Rules of hygiene during Corona pandemic

The aerosol concentration in the room air is an important factor for the spread of viruses and is therefore one of the main causes of an increased risk of infection. The German federal government has now added ventilation to the well-known AHA rule (Abstand/distance, Hygiene/hygiene, Alltagsmaske/everday mask). In addition to maintaining the minimum distance and wearing a mouth and nose cover, it is therefore necessary to increase the supply of fresh air in the interior.



Fresh air reduces the concentration of aerosols in the room

Cross-ventilation with wide-open windows opposite is the most effective measure to reduce the concentration of the virus load in the air. However, this method hides noticeable disadvantages, especially in the winter months: interiors cool down. Permanent reheating is both expensive and bad for the environment. The cold draft in the room also weakens the immune system – we become more susceptible to supposedly harmless pathogens.




Better decentralized ventilation in kindergartens, schools and offices:


These are your advantages with decentralized ventilation by inVENTer:

  • Ventilation support with up to 90 m³/h
  • Simple retrofitting in the outer walls
  • Minimize cold drafts by not ventilating through windows
  • No regular cooling of the rooms
  • Up to 88% heat recovery
  • Quiet operation optionally with soundproof lining




We ventilate now ...

  • Sometimes the largest sources of infection arise in the classroom, as there are up to 30 students and teachers in a confined space. Viruses not only spread very quickly in stale air. It has long been known that the CO2 concentration in classrooms is often far too high. Decentralized ventilation devices ensure a continuous exchange of air. In connection with rapid air exchange in CO2/aerosol tips, they can effectively ventilate classrooms without cooling down the indoor air too much.

    More about ventilation at school

  • When waiting becomes a risk: The risk of infection is also very high in waiting rooms if several people are in the same room for a longer period of time. A wide variety of pathogens can accumulate and spread in the air, especially in medical practices. Continuous ventilation is essential in order to avoid infection. Retrofitting a decentralized ventilation system in the waiting room offers the advantage of automatic basic ventilation of the waiting room without the room cooling down too quickly. Additional boost ventilation intervals when the room is heavily used are reduced to a minimum.

    More about ventilation in the waiting room

  • Keep your distance and follow hygiene rules in daycare? With a group of 3- to 6-year-old children in a mostly confined space, implementation is often difficult. However, regular ventilation in the kindergarten should be included as a measure in the standard program. In the winter months, however, it can get really cold in the daycare. With the cold, the immune defense of small children also decreases, which means that pathogens spread faster in the body. Ventilation with heat recovery as ventilation support brings preheated fresh air continuously inside and thus reduces the virus load in the room.


    More about ventilation in kindergartens

  • Despite the minimum distance and compliance with hygiene regulations – if several people share an office, the risk of infection with diseases is high. Aerosols are increasingly being emitted, whether in meetings or on the phone, when things get lively in the office. These spread quickly throughout the office space if regular ventilation is not taken into account. But if you open windows frequently, the office cools down faster, especially when it gets really cold outside. The decentralized ventilation helps to create basic ventilation in the office – virus and CO2 concentrations in the room air are steadily decreasing, and intermittent ventilation intervals are minimized. This combination not only meets the requirements of the workplace directive, it also ensures a pleasant working atmosphere – in two senses.


    More about ventilation in the office



Aerosol control

Whether during concentrated work or lively discussions – there is a lot of breathing in the classroom. Aerosols collect in the air to which pathogens can attach. A regular exchange of air is very important, best supported by an automatic, controlled ventilation system by inVENTer.


Quick installation

Too complicated? Not at all! inVENTer ventilation systems are inserted into the outer wall by means of a core drill hole and controlled intuitively with connected controllers. It couldn't be easier!


Heat recovery

Fresh air doesn't have to be cool. Because in the heart of our fans there is a ceramic core, which first stores the heat from the indoor air and in a second step releases it to the incoming outside air. For a comfortable room climate.




Healthy air in large rooms with decentralized heat recovery ventilation

This is how heat recovery works for ventilation in schools, offices, etc.

Functional principle of decentralised ventilation


The new high-performance devices for large rooms by inVENTer exchange the air with an output of up to 90 m³/h in the interior. The decentralized fans are installed in the outer wall and can be easily retrofitted with a core drill hole. The integrated reversing fan draws the used, warm air to the outside in the exhaust air mode and switches to supply air mode after 70 seconds to transport fresh air inside again. The ceramic cylinder inside the fan stores the heat from the exhaust air and transfers it to the incoming cold supply air. This means that up to 88% of the heat is retained.



Strong ventilation for large rooms

A lot helps a lot – Strong ventilation for large rooms

The iV14-MaxAir provides strong and compact ventilation. The fan with increased speed brings fresh oxygen to where it is needed. Thanks to its diameter of 200 mm, it is very easy to install in the external wall.


Technical Data

Exhaust air volume flow [m³/h] 20  90
Heat recovery [%] 88
Power consumption [W] 5
Wall opening [mm] 225
Energy efficiency class A+ / A


iV-Office – Strong and silent

Maximum performance with minimum noise  that's ventilation with the iV-Office. The Xenion® EFP fan with increased speed ensures healthy air exchange  with up to 52 dB sound insulation thanks to the patented sound insulation concept.


Technical Data

Exhaust air volume flow [m³/h] 20  90
Heat recovery [%] 88
Power consumption [W] 5
Wall opening [mm] 270
Energy efficiency class A+ / A