Why ordinary vacuums lose suction
Ordinary vacuum cleaners, even those that don’t use bags, lose suction power as they vacuum. Here’s why:
Bagged vacuum cleaners
The bag is meant to trap dust and dirt, and allow air to escape through millions of tiny holes in the paper. But when you start to use a bagged machine, dust and dirt collects in the bag and clogs the holes. This restricts the airflow, which causes a loss of suction, reducing the efficiency of the vacuum and leaving dust and dirt behind in your home.
Bagless vacuum cleaners
Ordinary bagless cleaners work in a similar way to those with bags. The cyclone collects the large dirt, but a central filter is still required to trap the fine dust. Just like a bag, it quickly clogs and restricts the airflow, causing a loss of suction and reducing the efficiency of the cleaner.
Why Dyson vacuums with Root Cyclone™ technology don’t
Dyson’s patented Root Cyclone™ technology doesn’t rely on a bag to trap all the dust and dirt. Instead, it spins the air so fast that centrifugal forces up to 150,000 times the force of gravity fling dust and dirt out of the air and straight into the clear bin.