Living room

This depends on the ventilation system and the tightness of the room and doors. Supply air elements are recommended for well-insulated new buildings. In any case, sufficient supply air must be ensured if there is a fireplace or stove with an open fire in the room. This prevents toxic carbon monoxide, which is produced by a lack of oxygen. Passive supply air elements are generally recommended for modern rooms, which are becoming increasingly tight and better insulated for energy-saving reasons. For example, they also provide constant fresh air without noise, pollutants or insects when opening windows.

Yes. Some systems even have a “party mode”, which reacts to the temporarily increased load caused by many people in the room and adjusts the ventilation output accordingly. At the end of the party, the system falls back to the particularly energy-efficient everyday operation.

This is system and control dependent. Often, central ventilation systems have a very economical base load operation when the occupants are absent, which only takes corrective action for a few minutes to ensure the set room climate parameters. However, these change little in empty rooms. Individual fans or decentralized systems can also be switched off completely as required.

Of course! For example, most controlled ventilation systems have a summer mode that takes into account the active use of a terrace or balcony and adjusts the ventilation function accordingly. In cold or bad weather, on the other hand, the best indoor climate is always ensured without energy-consuming window opening.

The central energy-saving element of these comfort ventilation units is the heat exchanger. It provides heat recovery in various construction methods, preserving the vast majority of energy in the house. The exhaust air stream sweeps over the heat-storing surface, releasing its contained energy. The incoming cool fresh air passes over the heat exchanger in the opposite direction and is pleasantly tempered.

This means that when air is exchanged, energy is saved twice: existing heating energy from inside the house is not released uselessly into the environment, as it is when windows are opened. Cold fresh air comes into the house already preheated and does not have to be heated by the heating system, which significantly reduces heating costs in the many cycles throughout the year.

Sometimes central ventilation is optimal. For example, if it can be planned from scratch for the entire living area in a new building with maximum efficiency. Or as basement ventilation, where a smart control system ensures condensation, mold growth and typical musty basement odors for the entire basement floor under sensor control.

A decentralized living space ventilation system with heat recovery is often ideal for renovations. It is ideal for retrofitting small apartments, offices or bedrooms, for example, where installation costs are manageable. In addition, these systems are very quiet and extremely energy efficient.

Sometimes, however, single units in only some rooms such as toilets, bathrooms, wellness rooms, utility rooms or garages are the best solution. Control modules allow the fans to be optimally adapted to the task at hand and automated. Combined with properly executed window ventilation in the rest of the apartment, this creates an inexpensive, yet energy-saving and comfortable solution.

The advantages and disadvantages, and then the appropriate system selection, are best made together with the architect or builder and the installer who will plan and implement the ventilation design.