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The quality of the vacuum cleaner

The sound of a general vacuum cleaner is about 80 decibels. Bart, the noise will naturally be smaller if the power is small, so pay attention to the relative power.
Also, in addition to noise, you have to pay attention to the vibration level of the vacuum cleaner itself. A high-quality vacuum cleaner should be powered on, and the vacuum cleaner itself has no obvious vibration, and the sound is stable and has no periodic changes.
Some vacuum cleaners use sound insulation boards to reduce noise. Although it can reduce 5-10 decibels, it is not conducive to the heat dissipation of the machine, which will seriously cause the motor to overheat and burn out. Therefore, when shopping, exercise must be eye-catching!
Many friends believe that the suction power of the vacuum cleaner is proportional to the power. In fact, the suction power is the real embodiment of the vacuuming ability. The vacuum cleaner does not convert all the electrical energy into mechanical energy of suction, and a large part of it is lost for various reasons. The true conversion rate of electrical energy and mechanical energy of suction is the so-called "efficiency". Generally, the efficiency of vacuum cleaners is more than 18%, which can be regarded as very good.
For the average family, a vacuum cleaner of about 1000W is enough.