We recommend to install the filter in the highest area of your room.
Keep humidity below 75% at all times to prevent reduced adsorption and reduced life time
Keep the outer filter clean: a clogged filter will create a pressure drop, diminishing the capacity of your extraction system.
Prevent bends and corners in your flexible ducting and always stretch it out to assure optimal airflow.
Phresh filters are designed to be used with flexible ducting. It is not recommended nor neccessary to connect the filter directly to the fan. This will cause more noise in your filter. We recommend to always use some flexible ducting (preferably insultated flexible ducting) between your fan and your filter to reduce fan noise in your filter.