"Danny D." writes:

This is a general question about how to choose vacuum cleaner suction by
the specifications (specifically by amperage).
http://i.cubeupload.com/JCucWV.gif

At a garage sale, I picked up three vacuum cleaners for almost nothing
(because my fourth vacuum cleaner isn't all that great on carpets) and
three of the four work fine (the Dirt Devil has a broken belt & roller).

How are 4 going to work better than one?

Install a whole house vac.

--
Dan Espen