Cleaning of ventilation systems and measurement and adjustment of airflows

Summary

The tender concerns cleaning, measurement and adjustment services for ventilation systems at A-Kruunu Oy properties, including cleaning of ventilation ducts. The estimated scope covers approximately 67 properties and about 3,978 apartments. Duct cleaning will generally be carried out once at each property during the contract period, although some properties may need to be cleaned more than once. The intended contract start date is 10 November 2026 and the contract will run until 31 December 2034; the tender submission deadline is 12 October 2026 at 06:00 UTC. The detailed scope of work and participation requirements are set out in the tender documents.