do Sharks always whistle?
I just got delivery of a Shark upright vacuum, a UV850 from Costco. I put it together and started vacuuming, and right away I can hear a high pitched whistling noise. This is right out of the box! I called Shark and the person on the phone had me turn on the vacuum, he listened, and then he told me that the vacuum is operating normally. The high pitched noise is because the suction is so powerful. What???
I can't put up with this noise. If this is truly how the vacuum works, I'll have to return it to Costco. (Luckily I know there won't be a problem there.) But I'm having a hard time believing that all other Shark users put up with this sound. It's continuous, and it's extremely annoying. Have any of you other Shark owners had this experience?