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Heat recovery

Ventilation systems with heat recovery are particularly efficient. They are particularly recommended for living rooms and bedrooms, as they constantly ventilate the rooms without heat loss. Click here for our extractors with or without heat recovery.

 

Possible components

The following systems can be used at the marked locations:

Advantages

The advantages of ventilation systems with heat recovery

  1. Energy efficiency: The main advantage of ventilation systems with heat recovery is that they use the heat contained in the exhaust air to heat the incoming fresh air. This helps to minimize heat loss and reduce energy consumption for heating.
  2. Air quality: Ventilation systems with heat recovery not only ensure a constant supply of fresh air, they also filter impurities such as dust, pollen and pollutants from the air. This improves indoor air quality and helps to create a healthy indoor climate.
  3. Condensation prevention: The use of heat recovery prevents warm exhaust air from being discharged directly to the outside, which reduces the risk of condensation in the ventilation ducts and in the building. Condensation can lead to moisture problems and mold growth.
  4. Comfort: Ventilation systems with heat recovery can help to ensure a constant exchange of air without losing too much heat. This creates a pleasant and even indoor climate.
  5. Reduced heating costs: As heat recovery improves energy efficiency, heating costs can be reduced overall. This is particularly beneficial in well-insulated buildings.
  6. Sustainability: By reducing energy consumption and improving air quality, ventilation systems with heat recovery contribute to the sustainability of buildings. They can be found in many modern, energy-efficient buildings, especially passive houses.

 

How ventilation with heat recovery works

A ventilation system with heat recovery (also known as ventilation with heat recovery or ventilation heat recovery) consists of several components that work together to supply fresh air and simultaneously recover heat from the exhaust air. The functional sequence is as follows

Supply air:
Fresh air is drawn in from outside and passed through a filter to remove particles such as dust and pollen. The filtered fresh air passes through a heat exchanger.

Exhaust air:
The warm exhaust air from the interior rooms also flows through the heat exchanger, but in the opposite direction to the supply air. During this process, the heat exchanger transfers the heat from the extract air to the fresh air.

Heat recovery:
Heat recovery takes place through the exchange of thermal energy between the incoming fresh air and the outgoing exhaust air. This heat exchange preheats the incoming fresh air, minimizing energy loss.

Distribution:
The preheated fresh air is fed into the interior of the building to ensure continuous ventilation. The air supply can be regulated individually for different rooms and zones.

Exhaust air disposal:
The cooled exhaust air is discharged outside, with the heat exchanger playing a central role. It transfers the thermal energy between the incoming fresh air and the outgoing exhaust air.

FAQ

1. how efficient are ventilation systems with heat recovery?

The efficiency of ventilation systems with heat recovery can vary. Factors such as the type of heat exchanger, the building insulation and the mode of use are relevant here. As a rule, however, the systems can make a significant contribution to energy savings regardless of their type by using the heat from the exhaust air to heat the incoming fresh air.

2. do ventilation systems with heat recovery require a lot of maintenance?

Maintenance requirements may vary depending on the system, but in general, heat recovery ventilation systems require regular checks of the filters, heat exchanger and other components. Maintenance should be carried out by professionals in accordance with the manufacturer's recommendations to ensure optimum performance.

3. can a ventilation system with heat recovery solve humidity problems?

Yes, heat recovery ventilation systems can help minimize humidity problems by providing controlled ventilation and dehumidification. This is particularly important to prevent condensation and mold growth.

4.Are ventilation systems with heat recovery only suitable for new buildings?

No, ventilation systems with heat recovery can also be retrofitted in existing buildings. The feasibility depends on the building structure and the installation options. Careful planning and advice from specialists are crucial.

5 How loud are ventilation systems with heat recovery?

Modern ventilation systems with heat recovery are generally designed to operate quietly. However, the noise level depends on the model selected. The sound power level provides precise information here.

6. can a ventilation system with heat recovery improve indoor air quality?

Yes, ventilation systems with heat recovery help to improve indoor air quality by continuously supplying fresh air and at the same time filtering out impurities such as dust, pollen and pollutants.

7. does the outside temperature affect the efficiency of heat recovery?

Yes, the outside temperature can influence efficiency. In extremely cold temperatures, the fresh air supplied may have to be additionally heated, which can impair the heat exchange efficiency. Nevertheless, ventilation systems with heat recovery remain more efficient than simple ventilation systems even at low temperatures.