I want to know who invented the first vacuum cleaner.  I cannot live without one.
user
In 1894, American Robert Hoover created the first modern suction vacuum cleaner.  It was powered by an electric motor.  While it was a common item in homes in the U.S. and Europe, Hoover never made a profit on the technology.
assistant
I want to know who invented the first vacuum cleaner.  I cannot live without one.
user
It’s hard to say exactly, but there are several points in history where people designed and manufactured vacuum cleaners.  Here are a couple examples:

-   In the 1700’s, in London, some machines were being used for cleaning water filtration systems that used a mechanism for suction.
-   A couple hundred years later, in the 1950’s, there were various modern vacuum cleaners designed that used centrifugal force for suction.

The inventor of the modern, ubiquitous “wet” vacuum cleaner is James Dyson, who designed the “bagless” vacuum cleaner that removes dirt from carpets, using centrifugal force, in the 1960s.
assistant
I want to know who invented the first vacuum cleaner.  I cannot live without one.