We bought a new vacuum cleaner us 3 years ago and I was happy next to the device's own suction especially on the clean air, which came out at the end. However, the hilt with our former suckers only in the first minutes after bag change to. With a Hepa filter has the clean feeling at least a year. You can put it then times with another device aspirate (with friends) and speak aufpeppeln something again helps 2-3 months. He is, however, out. If then plötzlilch its effect ceases to operate, you realize how well off einenm if you have him. I had to order immediately einene new and am again happy about the fresh air. The change is quite simple, you have nothing really "build"!