Yes. A thorough vacuuming is an essential preparatory step before we steam clean. Its an important first step and can make a big difference in the results.
We use a CRI Green label approved dual motor vacuum cleaner. The airflow and brushes are powered by two separate motors. One motor is devoted to loosening the soil and the other motor is devoted to removing the soil.
In a single motor vacuum, if the brushes require more power due to a deep pile carpet the power is generated by reducing suction. Why is this important? Science tells us we can only pull 14.7lbs of vacuum. Our vacuum cleaners create velocity (fast moving air) to suction the soils from our carpet. When you have a dual motor system it ensures that you maintain the maximum velocity/vacuum and get the most soil removal possible.