Ventilation System Inspection

Mandatory ventilation inspection (obligatorisk ventilationskontroll, OVK) must be performed regularly in most buildings in Sweden. The purpose is to verify that the indoor climate is healthy and that ventilation systems function as intended. The building owner is responsible for ensuring that OVK is carried out.

The inspection must be performed by a certified function inspector (funktionskontrollant). Inspection intervals are typically every 3 or 6 years depending on building type and ventilation system, though single-family houses are generally exempt from recurring inspections. Results are reported to the municipality's building committee.

Requirements

  • Regularity: OVK must be performed regularly according to applicable intervals for different types of buildings.
  • Certified inspector: The inspection must be performed by a qualified functional inspector (funktionskontrollant) certified by an accredited certification body.
  • Energy measures: The inspector shall provide suggestions on how energy consumption for ventilation can be reduced without compromising the indoor environment.

Responsibility and supervision

  • Owner's responsibility: The building owner is responsible for ensuring that OVK is performed.
  • Municipal supervision: The municipal building committee (byggnadsnämnd) monitors that owners fulfill their OVK obligations.
  • Remedial measures: If OVK is not performed or if the protocol shows deficiencies, the building committee may order the owner to conduct the inspection or remedy the deficiencies.