Robot Vacuum Buying Guide: Features Explained

Robot vacuums are sold with a long list of features and a lot of big numbers. This guide explains what the main features mean, which ones depend on your home, and what to check before you pay.

Navigation

How a robot finds its way around decides how well it cleans.

• Basic navigation. Simple robots move in patterns and bump into things. They can be fine for small, simple spaces.
• Camera-based mapping. The robot builds a map from images. It can work well, and it also raises privacy questions (see below).
• Laser (LiDAR) mapping. A spinning sensor measures distances to build a map. It usually works in the dark.

With a map you can often set no-go zones, clean specific rooms and, on some models, store maps for several floors. Obstacle avoidance for cables, socks and pet mess varies a lot by model. Claims are marketing until an independent test shows them in homes like yours.

Suction ratings

Suction numbers are not reliably comparable across brands because they can be measured in different ways. Look for independent tests on the floor type you have, and for how the robot handles carpet, hard floor and pet hair.

Mopping

Mopping features range from a simple wet cloth to systems that lift the mop on carpet. They reduce routine mopping but rarely replace deep cleaning. Check how much water the robot uses, how you clean or replace the pads, and whether the mop is safe on your floor type.

Docks

A dock can empty the dustbin, and some also wash the mop. Ask about ongoing costs such as bags and filters, how loud emptying is, and how much floor space the dock needs.

Maintenance

Brushes, filters and sensors need regular cleaning, and some parts need replacing. Check that replacement parts are available and how much they cost.

Privacy and connectivity

Many robots use an app and a cloud service. Before you buy, read the privacy policy, check whether the robot works without an account or cloud connection, ask how long the maker provides software updates, and consider that a camera-equipped robot may capture images of your home. Check what settings let you turn features off.

Fit for your home

1. Do you have thresholds, thick rugs or rugs with fringe that could trap a robot?
2. Do you have dark carpets or stairs, where sensors may struggle?
3. Do you have pets, and what will you do about messes the robot could spread?
4. Is there a place for the dock with enough room around it?
5. What is the warranty and the return period if it does not suit your home?

General information only. Features and specifications vary by model and change over time, so check the seller's current details before you buy.