20/10/2026
Replacing an intermittent extract fan with a dMEV fan isn't simply a product swap.
It represents a change in the ventilation strategy.
With intermittent extraction, mechanical ventilation typically increases when moisture production is elevated.
With dMEV, the fans operate continuously at a background rate, with higher rates available when additional ventilation is required.
That changes the question.
Instead of simply asking whether a fan can extract enough air when moisture is being produced, we need to consider whether the dwelling can continuously extract the required volume of air through the available extract points.
Our latest article explores why that distinction matters when upgrading existing social housing.
👉 Read the full article: https://vortice.ltd.uk/blog/dmev-in-social-housing-getting-ventilation-right-for-existing-homes/
