Mornin' Carmine,
I think that performance drop-off may contribute to the matter as well. Unless the filters on most bagless machines are tended fastidiously -- especially the pleated variety -- "out-of-the-box" performance can quickly fade. That's a cinch for getting a vacuum cleaner off to a dumpster.
Venson
Hello Venson:
Ironic you posted this. My neighbor, a woman and writer, is moving. She knocked on the door, and of all things, asked to borrow my vacuum. She does not know I am a retired vacuum industry professional, but I suspect she noted, as other neighbors have, a line up of vacuums in my garage. So the visit. My first question to her was if she was using a vacuum. She said she was but it died. I asked her to get it and meet me at my open garage door with it. She did.
It's a EUREKA bagless UNO with the spin duster and turbo tool on board. It looked fairly new and not used very much. She told me it was 3 years old. She purchased from SAM's Club on sale for $99 after a $20 instant cash rebate. She said it was working well but no more. I noticed she dumped the dirt bin. I saw that the foam washable pre-motor filter, which sits atop the bin with a clear see-thru cover, was packed with layer of dirt. This model has a see-thru hose to easily see clogs. Despite the accumulated inner hose dust, which was not making its way into the bin, it was not clogged. I plugged in and tested the hose suction. It was half the normal suction. These vacuums should compress the flexible stretch hose when you cover the tool end. It did not. I tried in the rug mode and noticed that the dirt did not swirl in the bin. I put my hand under the the vacuum to feel the brush roll revolution. It was fine. I couldn't stop it.
As a good neighbor, I loaned her my HOOVER TEMPO so she could resume her cleaning. I told her when she returns with the HOOVER TEMPO, I'll have her EUREKA fixed. She looked at me. She said thank you but she was going to throw it out with the next trash pick up rather than take it with her. I said that wasn't necessary. It's repairable, just needs pre-post motor filter cleaning. She said she never did it. From the looks of it, I already knew that was the case.
She was happy and took the TEMPO. I fixed the UNO. HEPA post-motor filter, pleated, was okay, but no doubt dirt infiltrated the motor because it was in the HEPA filter well. I repaired. The dirt on the pre-motor filter and filter compartment filled my HOOVER swingette paper bag, which I tossed.
The UNO motor is noisey. I suspect the bearings/fan are on their way out. But that's not on my agenda. It has good suction and should go awhile longer before the motor is gone. That is if she doesn't toss.
Carmine D.