The noise level of Roomba vacuums can vary depending on the specific model and the cleaning mode being used. However, in general, Roomba vacuums are designed to be relatively quiet compared to traditional upright or canister vacuum cleaners.
Most Roomba models have been engineered to operate at a moderate noise level, which is considered less intrusive and disruptive. This is particularly important because Roombas are often used for automated cleaning while people may be at home or even asleep. The sound they produce is typically similar to a low hum or soft whirring noise.
As technology has advanced, Roomba vacuums have become quieter over the years. However, keep in mind that there may still be some variation in noise level between different Roomba models, and certain cleaning modes or intensive cleaning tasks may cause the vacuum to produce slightly more noise.
If noise is a concern for you, you can check the product specifications and customer reviews for specific Roomba models to get a better idea of their noise levels before making a purchase. Additionally, some newer Roomba models come with "Quiet Mode" settings that further reduce noise levels while still maintaining effective cleaning performance.