Smart ventilation strategies for residences - practical applications


The IEA EBC Annex 86 Energy Efficient IAQ Management in residential buildings aims to propose an integrated rating method for the performance assessment and optimization of energy-efficient strategies of managing the indoor air quality (IAQ) in new and existing residential buildings.

The fourth subtask of the Annex organizes this topical session focused on “Ensuring performance of smart ventilation.” We want to present and discuss the smart ventilation strategies being currently in use in practice.

According to the AIVC: “Smart ventilation is a process to continually adjust the ventilation system in time, and optionally by location, to provide the desired IAQ benefits while minimizing energy consumption, utility bills and other non-IAQ costs (such as thermal discomfort or noise). (…)”. Several ventilation producers offer “smart ventilation control” packages as accessories to their home ventilation products. It seems that “smart ventilation” is the future trend. The subtask aims to develop a methodology for assessing and comparing smart ventilation strategies. There are many aspects to consider – the smart ventilation strategies, which already function in practice, suitable rating criteria (preferably performance-based) to evaluate their performance, quality and feasibility of their implementation, durability during operation, and occupant interaction.

The subtask includes all these aspects. We want to show and discuss examples that illustrate this broad range of issues in the topical session. We are also very interested in the views and opinions of the audience.  


The session has the following objectives:

  • Introduce several smart ventilation strategies for residences that are or had been tested, demonstrated, or in regular operation in actual buildings.
  • Introduce possibilities for common evaluation/rating of smart ventilation strategies.
  • Discuss challenges and barriers related to applying smart ventilation strategies in practice.
  • Discuss the needs and drawbacks of possible general rating schemes and their relation to the performance-based evaluation of ventilation performance applied in different countries.


  • Introduction: Presentation of the IEA-EBC Annex 86 and ST4-smart ventilation subtask – Jakub Kolarik, Technical University of Denmark, Denmark
  • Energy savings and exposure to VOCs of different household sizes with a smart ventilation system – Klaas De Jonge, Gent University, Belgium
  • Smart ventilation toward an assessment of airflow imbalance and supply temperature set-points – Kevin Michael Smith, Technical University of Denmark, Denmark
  • The durability of performances of humidity-based ventilation after 15 years of operation in French residential buildings, Adeline Melois, CEREMA/DTerCE/DTT/BAT, France
  • Demonstration of an innovative room based mechanical ventilation system in a renovated Danish apartment building, Jakub Kolarik, Technical University of Denmark, Denmark
  • Assessing demand-controlled ventilation strategies based on one CO2 sensor – Gabriel Rojas-Kopeinig, Innsbruck University, Austria
  • Discussion – exploring opinions, challenges, and barriers related to the application of smart ventilation strategies in practice


  • Jakub Kolarik, DTU, Denmark
  • Gabriel Rojas-Kopeinig, Innsbruck University, Austria


  • 90 minutes