Does the Obligatory Ventilation Control Fulfill Its Purpose?

  • Kristina FyhrEmail author
  • Caroline Markusson
  • Svein Ruud
Conference paper
Part of the Springer Proceedings in Energy book series (SPE)


The regulation “Obligatory Ventilation Control, OVK” has been into practice since 1991 in Sweden. The role of the regulation is to control the ventilation in premises, multi-family houses and single and two-family houses (with certain ventilation systems). The control is done before the ventilation system is taken in operation and after that on regular intervals (except for single and two-family houses). The purpose of the OVK is to secure that the indoor climate is good and that the ventilation system is functioning. This paper will present results on how the OVK works today, both in theory and in practice and, by stakeholders, identified wished development of the OVK. To get a broad picture of how the OVK works, interviews were carried out with persons related to the OVK; building owners, OVK controllers, administrators at the municipality, legislators, organizations etc. Based on this, suggestions were made for how the OVK could develop to better suit its purpose. Results from the interviews show that an approved OVK is not a guarantee that the indoor environment is satisfactory, since the current use of the premises isn’t taken into account. Further, the legislation for ventilation is not adapted to new technology such as demand control ventilation, and different authorities’ legislation also differs regarding for example reduced/shut off ventilation. The study also shows that the follow up of the OVK from the municipality often are inadequate. Further, energy-saving measures that should be included in the OVK are handled very differently and the level varies considerably.


Ventilation control OVK Indoor environment Energy efficiency Ventilation 


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.RISE Research Institutes of SwedenGothenburgSweden

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