JESSP Ratgeber

Bathroom extractor or heat recovery ventilation? Choosing the right bathroom solution

Compare bathroom extract fans and decentralized heat recovery ventilation: airflow paths, replacement air and planning for internal or external-wall bathrooms.

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CO₂ or humidity sensor: which ventilation control suits each room?

CO₂ or humidity? Find the right ventilation control for bedrooms, living rooms, home offices, bathrooms and basements.

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Planning decentralised ventilation in a new build: eight early decisions

Make eight key ventilation decisions before the interior fit-out to coordinate units, wall openings, electrics and maintenance.

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Retrofitting decentralised ventilation: plan your renovation correctly

Coordinate airflow, wall openings, power and controls before retrofitting decentralised ventilation in an existing home.

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Decentralized bedroom ventilation: plan noise correctly

How to size quiet bedroom ventilation, interpret dB(A) values, select the installation point and achieve sufficient airflow at a comfortable night setting.

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Ventilation against mould: what really helps and what does not

How ventilation removes excess moisture, which humidity levels are useful and why ventilation cannot repair existing building defects or mould damage.

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