Why would a Hoover Windtunnel have no suction?

SOURCE: Hoover Windtunnel

Either the hose has a clog, or the inlet down by the belt is clogged. Is there suction at the end of the hose, if not then it is clogged. If there is suction, then it has to be clogged down below by the brush roll, check that inlet. There also is a filter at the bottom where the dirt cup (and bag) is, check it also.

SOURCE: hoover windtinnel suction problem

the intake hos at the bottom might be clogged.first take all the filters out and disconnect the hos completely from the vacuum,then check and see if you have suction.the intake hose is the clear looking one at the bottom that wrapps itself up from the base to the backside of the upright.you can use a coat hanger to push out the clog if there is one just bend the tip till its rounded.work it down into the intake hose from the back.after removing the hose and the filters you should have suction.just make sure all the filters get cleaned .you can blow out the hose with a garden hose

SOURCE: poor suction (new bag, clean filter, clear hose)

check the impeller on the moter it may be missing a fin or two (question does it make any unusual noise or vibration ?)

SOURCE: hoover windtunnel self-propelled vacuum is not

have you cleaned the filters?

SOURCE: windtunnel hoover is not suctioning but blowing instead

look near your bottom of your vacuum. it might be clogged there have it looked at a soon as possible.