It sucks. Yay! Just like it’s supposed to.
We fixed our central vac with this product along with a little help from an internet how to. I can’t say it did it completely by itself. We used a second hose to put the pressure to both side.  But we put two cloths threw it and  it is working great. I might do this as maintenance and put one through the length of all the pipes. I’ll be buying more.
Rating: 5 stars