Differences between AC Pumps and DC Pumps

The disadvantages of AC Pumps:
Unsafe: Electric voltage lower than 36v to make our lives safer. The electric voltage of AC pumps is above 220v, so the requirement for insulation is very high. Once the cords are broken, accidents might happen. If the AC pumps are to be used in fish tanks, it could be quite dangerous for the fish.
Shore service life: The wire cores of AC pumps are normally copper wrapped by aluminium. The functioning temperature of motors is often around 120 degrees. Therefore, the service life of AC pumps can be quite low. Also, AC pumps are less efficient than DC motors.
High noise: The technology of AC pumps is old and the materials are often low-cost. The noise AC pumps make when functioning is normally above 40 db and will become worse as the pumps getting older.
Low efficiency: The quality of the AC pumps on the market vary. The parameters are often inaccurate. Therefore, the performance of the pumps might not be ideal.
The advantages of DC pumps:
Safe: The electric voltage of DC pumps is between 5V-24V so that they are much safer than AC motors. Even when the cords are damaged, there is no need to worry about electric shock accidents.
Long service life: DC pumps are normally made of pure copper. With the latest brushless technic and advanced design, the service life can be longer than 30000 hours. The temperature of DC pumps is also relatively low.
Low noise: DC pumps adopt unique noise-reducing design and flexible sucking design so that the pumps are more stable when functioning and the noise is reduced. 
High efficiency: The parameters of DC pumps are usually accurate. They are low power consumption and highly efficient.
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