How do you know that my dryer vent has been cleaned properly after your cleaning?

Restricted or reduced airflow in the venting system can be both a cause and an effect of dryer vent problems. JCS Home Services takes before and after airflow measurements. The first airflow is to determine what your dryer and vent system is doing before we even start the cleaning, the second airflow is to establish that we have delivered a correct and complete cleaning of your system.