We had a Shark for a year and found it made loud noises and stopped working after 30 seconds of operation. We cleaned everything and made sure nothing could cause clogs. I was disappointed because we had just come through a one year warranty and decided it wasn't worth repairing. I decided to send a brand new kit/replacement as a last resort. We received within 2-3 days and my 13 year old son was able to change everything and now everything works great!