So, about the Miele Compact C1 Pure Suction Vacuum's noise levels—it's mostly designed for hard floors and low-pile carpets. Our research shows it's a bit of a mixed bag depending on where you're using it.

On hard floors, it's generally pretty quiet. This lines up with what the manufacturer says about its low noise levels, aiming for a more pleasant cleaning experience. Some folks have mentioned that it's quieter compared to other models, which is great if you need to keep things calm around kids or pets who get startled by loud sounds.

But when you switch to carpets, especially the thicker ones, it can get a bit louder. The strong suction might make it tougher to move around on thick carpets, creating some extra noise. Even so, many people still find it quieter than other vacuums they've used.

It doesn't have a motorized brush head, which might help with noise reduction on carpets. But the manufacturer also points out that its sound-optimized motor and integrated insulation help keep the noise down.

So, if you're mainly dealing with hard floors and low-pile carpets, you'll probably find the Miele Compact C1 Pure Suction Vacuum to be a quiet and efficient choice. Its strong suction and insulated design are definitely pluses for keeping things peaceful at home.