
The iRobot Roomba S9 is pretty solid on both carpets and hard floors, but it does handle each surface a bit differently. Here's the scoop:
The S9 does a great job on carpets, thanks to its strong suction and advanced cleaning tech. According to our research, it has this Power Boost feature that kicks up the suction when it's on carpets, so it picks up dirt, pet hair, and debris that's stuck deep in the fibers.
The dual rubber brushes adapt well to different surfaces and don't get tangled easily. While most folks are happy with its performance on carpets, some say it can struggle with really high-pile carpets or rugs with deep textures.
When it comes to hard floors, the Roomba S9 continues to do well. It has a high-efficiency filter that captures 99% of mold, pollen, dust mites, and allergens as tiny as 10 microns, which is great if you have pets or allergies.
The way the manufacturer describes it, there's an edge-sweeping brush that's angled specifically to pull in debris from corners. According to our research, many people appreciate how well it picks up fine dust and debris on hard floors without scratching them.
The S9’s D-shaped design helps a lot with edge and corner cleaning. The manufacturer claims its Corner Brush is specially angled to lift debris from tight spots that other round vacuums miss.
Our research shows mixed results here—some people are really impressed, while others mention it sometimes has trouble with obstacles and might need a little manual help.
Overall, the Roomba S9 is a versatile vacuum that works well on both carpets and hard floors. It has powerful suction and some neat design features to handle various cleaning tasks.
But, like any robot vacuum, it might need an occasional manual touch-up, especially in cluttered or tricky areas. If you’re looking for the convenience of a robot vacuum and don't mind some occasional manual intervention, the Roomba S9 is worth a look.
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If you're still curious about the iRobot Roomba S9 (9150), here are some other answers you might find interesting:
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If the iRobot Roomba S9 (9150) doesn't quite fit your needs, here are some other options to consider:

The Roborock S8+ boasts an advanced dual-sensor navigation system, merging LIDAR and 3D scanning cameras for accurate mapping and effective obstacle avoidance. It also features an ultrasonic mopping system that tackles tough stains, making it a powerful and multifunctional option over the iRobot Roomba S9.

Looking for a budget-friendly option? The Dreametech DreameBot D10 Plus offers self-emptying capabilities and built-in mopping at a competitive price. It navigates various surfaces effectively, providing solid performance without the premium cost associated with the Roomba S9.

The iRobot Roomba j7+ features advanced AI technology for real-time hazard avoidance, making it an excellent option for families with pets. While it may not have the suction power of the S9, it excels with its automation features and the peace of mind it offers when cleaning around obstacles.

The Roborock Q5+ is a great pick for those looking for efficient cleaning at a lower cost. It features self-emptying capabilities and a user-friendly app for controlling cleaning sessions. While it may lack some of the high-end features of the S9, it still offers effective coverage and ease of use.

The Wyze Robot Vacuum features LIDAR navigation that performs well in low-light situations, offering better coverage than the Roomba S9 in similar environments. It provides a strong balance of features and performance at a more affordable price, making it a reliable choice for various household needs.