Ventilation duration per session
The right ventilation duration depends on method and room size: purge ventilation takes 5-15 minutes, trickle vents need 15-20 minutes minimum.
9 minDamp & Ventilation
Condensation, black mould, extractor fans, PIV and MVHR - air that stays fresh in a sealed-up home.
15 guides
Mould in MVHR ducts: HEPA grade, clean order and airflow retestFind the correct order for isolating, filtering, cleaning MVHR ducts with HEPA filters and verifying airflow to control mould effectively.4 min read
What are MVHR filters and how they keep air cleanMVHR filters clean incoming air and protect the exchanger. Learn grades, change intervals and the signs they are overdue.9 min read
Rigid vs flexible MVHR duct in small loftRigid duct cuts pressure drop and sag noise in tight lofts, but flexible snakes through joists faster: here's when each matters.12 min read
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