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How much does positive input ventilation (PIV / VMI) cost? (2026 prices)
No damp-proofing company publishes its prices. We gathered the ranges we found — and we tell you where they come from.
Observed range
€800–2,500
apartment, installed (estimate)
Ventilation that blows filtered air into the home. Fixes persistent condensation when airing is not enough.
Source: estimate based on installers
Before you sign, ask
- What type of damp did you identify, and with what measurements?
- What exactly does the guarantee cover — and who honours it if the company closes?
- Does the price include re-plastering, painting and removing the rubble?