Frequently Asked Questions
What does suction power mean in a robot vacuum?
Suction power is how much air the vacuum can pull in and how hard it pulls, similar to using a straw for a thick milkshake. Stronger suction means more air rushes in, lifting bigger particles and deeper debris.
How does a robot vacuum create suction?
Inside the robot, a fan spins very fast to create a low-pressure zone, so higher-pressure air outside pushes in through the suction opening, dragging dirt along. More spinning speed and smarter design mean better suction.
Does suction power matter more for carpets or hard floors?
Suction power matters most for thick carpets, pets that shed, or homes with kids who drag in mud, because stronger suction digs into carpets to pull out dust and dander. For hard floors with light debris, lower suction is fine.
How do robot vacuums without high suction numbers work?
Some models rely on spinning brushes to flick dirt into the air and catch it with a weaker fan. These can struggle on carpets and leave behind fine dust, unlike strong suction models that pull everything straight in.
The bottom line
Suction power isn’t magic – it’s just how well your robot can hoover up the mess. For most people, a mid‑range model (around 3000–4000Pa) is plenty. If your home has carpets, pets, or lots of traffic, spend a little more on a high‑suction robot. And if you’re on a tight budget? A lower‑suction model with good brushes can still keep surfaces tidy, especially on hard floors. Pick the one that matches your dirt load, not the biggest number in the store.