Robot vacs are popular and come with many features including self-cleaning capabilities, mapping and floor mopping. But they still need to make improvements in some areas, so you may not want to part with your regular stick vac or barrel vacuum just yet.
The CHOICE labs put robot vacuums through their paces to see which ones are best at cleaning your floors, as well as being easy to set up and use.
Here, we'll tell you how we put robot vacs through their paces to give you the results that help you choose what to buy.
On this page:
- Our expert testers
- How we choose what we test
- How we test robot vacuums
- Test criteria explained
- Our test lab
Our expert testers
Our testers Matthew Tung and Adrian Lini are passionate about determining a product's technical performance.
Matthew has worked at CHOICE since 2011, testing a wide range of products in the CHOICE labs from strollers to electric blankets, as well as stick vacuums. He also sits on Australian Standards committees.
Adrian tests many small appliances including espresso machines, toasters and carpet shampooers.
How we choose what we test
With so many manufacturers jumping on the robot vacuum bandwagon, what makes us choose one robot vacuum to test over another? As with most of our product testing, our aim is to test the most popular models on the market and what you're most likely to see in the retailers.
We survey manufacturers to find out about their range of models, we check market sales information and we also check for any member requests to test specific models.
From this information we put together a final list that goes to our buyers. They then buy each product from retailers, just as a regular consumer would. We do this so we can be sure they're the same as any consumer would find them and not 'tweaked' in any way.
Robot vacuums may miss certain parts of the floor, even after repeated mapping.
We test how well the robot vacuums remove pet hair from carpet.
How we test robot vacuums
Dirt removal from hard floors
Our experts scatter a measured amount of sand evenly over a vinyl floor area and lets the robot run for 25 minutes, or until the vacuum completes its cleaning cycle, measuring the dirt pick-up at intervals throughout.
They place objects (like chairs and a bench) in the room to make the set-up look similar to a home. With regular barrel vacuums, they pre-load the dust collector with dust, but robot vacs have a very small dirt receptacle which is normally emptied after a cleaning session, so these aren't pre-loaded.
Dirt removal from carpet
Sand is sprinkled evenly onto a section of carpet and the robot runs for a set period of time on the carpeted area. The sand collected is weighed and recorded.
Cleaning corners and edges
Sand is spread into a right-angled corner, and the robot vacuum cleaners are assessed to see how close to the corner they can get to pick up the dirt.
Pet hair removal
Cat hair is embedded into the carpet and the vacuum is allowed to run for six minutes. Our testers rate the vacuums based on how much cat hair is left behind after the test (this is a visual assessment).
Ease of use
While robot vacuums are generally very easy to use and operate, the increasing reliance on apps and connecting the machine to your home network means we started factoring this into our scores in 2023. The ease of use assessment includes:
- ease of emptying the dirt receptacle (models with self-emptying functions tend to score better for this)
- whether the app is easy to use, with clearly labelled functions
- ease of connecting the robot and app to your home network.
Robot vacuums can mop as well, so we now test how well they can remove stains and avoid carpet.
Mopping test
About half of the robot vacuums that come through the CHOICE lab now have mopping capability, so we've introduced a mopping score (for models tested after August 2023). Our members also want to know how they perform at this, as they may want a robot vacuum with a mopping function.
Our experts assess how easy the mops are to program and prepare, and how easy the mopping pads are to wash.
When testing performance, they spread several common stains around laminate floorboards including coffee, red wine, a mud mixture, soy sauce and jam.
They then give the robot the best possible chance to do its job by selecting the most intense cleaning and water flow settings and rating how well the stains are removed.
Another part of this test is to see how well the robot avoids carpet (if it mops carpet, this can cause stains). Some robot vacuums don't have automatic carpet avoidance capability while mopping, and in those cases we follow the manufacturer instructions on how to set a defined cleaning area that will avoid the carpet.
Some newer models can even lift their mopping pads up if they encounter carpet so you don't need to specify a 'no-go' area for the robot. If the mop makes things dirtier by getting on carpet and spreading soil around, a penalty may be applied to the overall mopping score.
Test criteria explained
For models tested prior to 2023, the CHOICE Expert Rating (our overall score) is made up of the following performance scores:
- hard floor dirt pick-up (40%)
- dirt removal from carpet (30%)
- cleaning corners and edges (15%)
- pet hair removal (15%).
From 2023 onwards, we include ease of use as 10% of the CHOICE Expert Rating, with the performance scores making up the remaining 90%.
Mopping scores (where applicable) don't form part of the CHOICE Expert Rating.
Our test lab
The CHOICE small appliances lab is up to date with the latest reference machines and calibrated measurement tools for our expert testers to bring you the right results.
Stock images: Getty, unless otherwise stated.
