What is a heat recovery system? And how does it work?

An MVHR (heat recovery ventilation) system consists of a ventilation unit that not only extracts dirty air from your home, but also supplies fresh air from outside. The heat exchanger in the MVHR system then ensures that the filtered fresh air is pre-heated by the residual heat of the air extracted from your home. In this way, heat is transferred without the two streams of air coming into contact with each other. During hot periods, this principle works in reverse.


Saving energy with a heat exchanger

The heat is transferred to the fresh air outside so that it is always at the right temperature when it enters your home. As a result, you will not suffer from cold air flowing through the house and you can save up to 300 to 400 m3 of natural gas per year.

Maintenance MVHR -system

Regular maintenance of the MVHR system is important to ensure proper air extraction and supply. Over time, dust and bacteria build up in the MVHR system, the ductwork and other parts of the ventilation system. This results in reduced extraction and supply capacity, unhealthy air, moisture and fungi that can enter the home.

The filters should be changed twice a year. An indicator on the unit will tell you when it is time to replace them. At Intovent we offer a wide range of MVHR filters.

Benefits of cleaning an MVHR system

Cleaning the MVHR system will ensure that the whole system operates at optimum levels. As a result, you will benefit from many advantages, such as:

  • Clean air
  • Optimum extraction capacity
  • No unpleasant odours from the MVHR unit
  • Optimal adjustment resulting in lower noise level
  • Problems are detected timely, reducing repair costs, and extending the life of the system
  • Saving energy
  • Healthy indoor climate

In turn, a healthy indoor climate helps to prevent complaints such as headaches, sleep disorders, skin problems, lung diseases and fatigue.

Advice on cleaning and maintenance of your MVHR system

Our service and maintenance company recommends changing the filters every six months. It is also important to have the filters cleaned in between. In a new house, it is advisable to clean or change the filters regularly during the first period, as the filters are more likely to get dirty from building dust.

Is your MVHR system several years old? Then you may want to consider replacing it. 

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