Residential construction in Germany – Ventilation concept necessary for construction

Residential construction is booming lately, not only because of low rate of interest, but also a strong job market and profitable investment opportunities for investors for newly built houses. And the demand is high. Especially in cities flats are highly demanded. The city-life is still attracting people of all ages, since it is rich of shopping and lifestyle options as well as heightened professional possibilities. A quick trip to the shopping centre or to the theatre at night, all that is extremely easy in cities. Long distances are tackled by public means of transport. You can live modern and energy efficient in newly built houses.

According to the federal agency of statistics there have been 216,594 flats permitted in 2012, in 2016 it has been a total of 323,311 houses - and counting. No matter where the new houses are built, they always have one thing in common: they have a ventilation concept.  Caused by a steady increase of wall-tightness of the Building envelope, the federal government defined a minimum air exchange level for inhabited flats with the DIN 1946-6 according to the latest energy conservation regulations (EnEV). The Building as well as the inhabitants health benefit greatly from this regulation. Badly ventilated rooms are prone to mould caused by humid air that occurs with breathing, sweating, cooking, showering and bathing. Moreover, a constant lack of fresh air and oxygen makes sick. The learned ventilation behaviour of a lot of people - rush airing after showering and cross-airing in the morning is just not sufficient any more.

Why do you need a ventilation concept in the first place?

Whenever you are building a house, you need to have a ventilation concept for every separate living unit. The concept has to include facts to define the necessary air exchange. Such factors are for example the insulation standard, the living space, the number of inhabitants, the place of the building or the natural gap ventilation. In a space of 70 m² the air volume flow is supposed to be around 30 m³ per hour, if the inhabitants are not in the flat. For rooms with the same m² where the inhabitants are present the norm DIN 1946-6 recommends a ventilation of 95 m³ per hour.

The decentralised ventilation systems with heat recovery by inVENTer can ensure the demanded minimum air exchange. The carefully positioned ventilation devices in the outside walls direct the fresh air deeply into the living spaces.  The inVENTer original ceramic heat accumulator in the devices samples the heat  from the room and enriches the fresh air with up to 80 % of the rooms heat. The iV14V is a ventilation system with square wall sleeve and is especially fit for newly built houses. With a maximum heat recovery rate of 89 %, the iV14V helps to save valuable heating energy. By the way, the compact fan iV-Smart is already equipped with the innovative inVENTron technology. The patented double air control unit divides and redirects the air flow to the needed areas which enables a heat recovery rate of incredible 93 %.

Our intelligent ventilation technology operates without additional piping and can thus quickly be mounted and easily operated. Furthermore the ventilation solutions can be fit to every living- and working situation - starting at Roof slopes to window reveal solutions down to souterrain areas. Once decided  for an inVENTer device, always gets a ventilation concepts free of charge. The included energetic evaluation serves as a base for the calculation of the EnEV- verification which is necessary for the building approval.

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