Aside from the features, one of the significant specifications that buyers look for in a robot vacuum cleaner is the noise level. Robot cleaners generally have smaller motors compared to the traditional types, and thus, they create less sound. But if your home has babies or you often let the cleaner do its job at night, then getting a noiseless bot is a must. 
Here’s a chart of a few popular Roomba models and how much noise they make: 

Model  Noise Level
Roomba 880 65-70 dB
Roomba 980 70 dB
Roomba 780 55-58 dB

The iRobot Roomba 780 has the lowest sound emission and thus comes highly recommended for those looking for “ultra-silent” types of bots. It is considered as a magnificent flagship of the company that has been in the business since 2000. 

But to get further clarity on just how loud a Roomba cleaner is, we first need to ask, how many decibels is considered to be loud and how loud is 58dB? Decibel (dB) is the standard unit used to measure the sound level generated by vacuum cleaners. The general rule is, the higher the decibels, the louder the sound it creates, and the higher the noise levels. 

Roomba 780, the quietest model, makes only 58dB, which can be comparable to the sound of a normal conversation. This noise level is bearable and is less pronounced. If you were in a different room, you would barely hear the sound of the working cleaner. This has been observed by several users who have given reviews on the product. 

This Roomba model utilizes the “Dirt Detect Series 2 Technology” that uses the latest innovation in acoustic and optical sensors. This is to detect both small and large debris. The three-step cleaning power makes it compatible with all floor types. 

Compared with previous models of iRobot Roomba, it has 50% more battery life and is the quietest of the Roombas. The specs of the Roomba 780 are similar to 770 but with improvements, such as the touchpad buttons, dual HEPA filters, and better edge cleaning. 

One disadvantage of using the quietest model that Roomba has to offer is that it can’t clean stairs. So if you have a multi-story house, you will need to bring the bot up and down. However, considering its superior performance, this is still an excellent buy for busy people who want a self-cleaning device. 

When choosing soundless robotic vacuums, or the quietest Roomba, the first thing to consider is the type of floor you have and the work it’s supposed to do. Although there are powerful vacuum cleaners that can work on various surfaces, it is still best to purchase Roombas that are specifically designed for your floor type. It is best to ask questions like, “will they work on hardwood, vinyl, tiles or carpet” or “will the Roombas clean pet hair or simply dust and dirt?”

After deciding on these two factors, you will be able to make a much easier decision based on other factors such as battery life, app compatibility, and Wi-Fi connectivity. 

After taking all these factors into account and considering your personal preferences, you’ll be able to make a more sound decision on which Roomba should clean your home. But if you want the overall most quiet Roomba, then the iRobot Roomba 780 is the vacuum you’re looking for. Make sure to pick up one today to experience all the benefits it has to offer.