How is high-vacuum extraction different from low-vacuum or ambient systems?

The key difference between hi-vac and low-vac systems lies in pressure and purpose. Low-vacuum or ambient systems move large volumes of air at low static pressure to clean the air in a room or draw from large hoods. High-vacuum systems operate at much higher static pressure, delivering strong suction through narrow hoses to remove contaminants right at the source. This makes hi-vac ideal for targeted extraction in processes like welding, grinding, sanding and housekeeping.