Silent vacuum cleaner

use earplugs or take a break for 10 minutes. much more efficient that trying to come up with silent vacuum cleaner.

well, don't want to be negative or discouraging, but i believe that all those companies producing vacuum cleaners that are out there have a really good understanding what is and what isn't an USP for a customer (and how much the customer is willing to pay for it). Otherwise they would already be out of business.

What if they know it would be really a great USP but don't know technically how to do it? I agree with Kouman. I still see an opportunity there. It really is annoying.

I do not think that they do not know how to do it. It all comes down to costs and how much customers are willing to pay for such benefit. My take on this is that having silent vacuum cleaner would be really expensive at the beginning (and not that benefiting, even for early adopters, snobs etc.), so there is no real market for that. That is why it's not here and very little can be done about it, unless a critical amount of people get really annoyed by noisy vacuum cleaners.

Or unless someone finds out-of-the-box cheap solution for that. Its like saying 80 years ago there is no real market for a car because it is too expensive. Yes, it was until Ford found a way to make it really cheap.