My vax pet Hoover has lost its suction I've emptied it there's no blockages and Iv cleaned the filter

Hepa filter cleaners have two filters in them. You need to replace both. Sorry some only use one. I would need the brand an model to tell you where they are an where to get them. Your best bet is to call a vacuum repair place an see if they have the filters. Or look online an they can be purchased from make, such as Hoover, Sears, Orich, etc. i replaced mine they just pull out an I never knew they were there. Unless you want a new vacuum.

check for a partial blockage in the wand/ hose ( rag-ball--hair ball ) Check that the hose is not collapsing at past kinks.

please go to web page from Hoover and see the videos respectively from your model, etc.
http://hoover.com/support/video-instruction-guides/
However this can be a problem:There could be a clog in the hose or the bag/tank may be full and need to be replaced or emptied. Also, check the belt to see if it is worn or broken, if it's defective replace it.

Yep,

Your filters are clogged. As a result the motor is straining and overheating, then a thermal cutout operates.

Clean the filters in the top of the vax and if you are ussing a cloth bag empty and wash ot. If a paper bag, replace it.

All should be well

Hello Guest, Please check that your brushbar is turning, if isn't then your belt has broken, once replaced your machine should be fine.
If you need further help or advice, please call the Vax Customer Careline on 0844 412 8455 with your machine available, and an Advisor will be able to help you. The Vax Careline is open every day, from 8.30am until 6.30pm, Monday to Friday, and 9am until 5pm on Saturday and Sunday. Outside of these times please check the website support section which includes videos to demonstrate how to deal with everyday problems such as changing filters and belts and checking for blockages. With best wishes, The Vax Team.

You've probably got a lesser blockage further down the pipework, which is reducing the airflow. Check everywhere possible for blockages, and also make sure the washable filter is clean and dry.

if you take out the dirt cup at the top there should be a half moon orange that releases. inside of this half moon is a washable filter. rinse with warm water and let it dry completly before putting back into the machine. this should restore your suction. hope this helps.

vax power pet 1 filter keeps getting clogged up so dirt not going into cylinder

not getting any suction. there are no blockages.

ALTHOUGH MOST FILTERS SAY WASHABLE THEY DO STILL NEED TO BE REPLACE AS WASHING THEM SHRINKS THE FILTER AND EVENTUALLY CLOSES THE AIRWAYS. WHICH ALSO IF NOT REPLACE WILL OVER HEAT MOTOR IN MACHINE AND CAUSE MOTOR FAILURE.