Hello,
I was in the cleaning industry for 13 years. You most likely
have gotten all you can get out of your vac. The vacs that
are made today, just don't last. The animal hair will take a
toll on it as well. Animal hair also takes a toll on your A/C
unit in your home. I know you want a Dyson. They do work
well, but a key part of them is prone to breaking. This
part is very expensive to fix. (Half the cost of the vac)
Rainbow vacs are a good quality. Eureck vacs are expensive
and I
found they don't work any better than a cheap one. I used
Eureka brands in my company. We would use them sometimes 6
hours a day, 5 days a week. I would recommend you get online
and search for commercial vacs. The same companies that make
home vacs, have commercial versions. You can buy a
commercial starting a about $235 new. Ebay probably has
better deals. The commercial vacs will have a heavy longer
cord, the parts are metal not plastic, and the usually have
better motors. We used Eureka brand for our commercial vacs.
I hope this helps. Happy Vacuming!!