modern air units in an up-to-date dress
For low energy houses and passiv houses it is almost a standard to integrate a ventilation system with heat recovery. It has also established in some parts of appartement and office buildings. These systems are planned and integrated right from the very first plans of the building and are usually hidden under a lowered ceiling and in central technical support rooms.
It is generally noticed that in many new errected malls the ceilings are not covered anymore for financal reasons. The formerly hidden installation is to be seen freely. And what you get to see there isn't just a pleasure: With paint or aluminum it is tried to improve, with the result that it mostly just looks cheap.
On one hand you have the expenses and on the other hand the esthetical pretentions that have to be combined. Ventilation systems dont have to be built in a one-look-fits-all way to just bashfull perform in the background.
They can be part of the room and accentuate its difference. They can be adapted to architectual stiles and be part of the general architectual concept.
This disposition favours considerations about how airing systems could be integrated afterwards in rooms that need to be ventilated or in rooms that due to the interior architecture either are not allowed or are not able to be altered.
A very good example is the modernisation of industry buildings. Old production area isn't needed anymore and is transformed into offices or event centers. There are no central ventilation systems. The areas in those reconstructed buildings are used in different ways and therefore have different airing demands. Those demands can be pleased in a perfect way by intergrating decentralized ventilation systems - the airing- and heating demand as well as the design.