I think there’s a little more to it than just AC/DC.
Yes! They really are both an AC pump. But I believe the major difference is in the impeller design. The soft start of a DC allows for an impeller to push more water. If an AC pump would have the same design , based on a hard start of the AC pump it would cause issues Eg high immediate load Eg on shaft.
Also with DC pumps you can design a motor block to have multi pole motor. Which makes if virtually vibration less. Something you can’t do with a 115v AC two pole motor.
There are benefits, as mentioned above but there are benefits to AC such as reliability. Basically you have to choose what works best for you.
AC pumps with high reliability are Eheim and Sicce syncra the Fluval.
Let’s not forget the Fluval is a great and quite pump but it still has a chip in the motor block which can fail. This is why I am putting it behind Eheim and Sicce in reliability.
Yes! They really are both an AC pump. But I believe the major difference is in the impeller design. The soft start of a DC allows for an impeller to push more water. If an AC pump would have the same design , based on a hard start of the AC pump it would cause issues Eg high immediate load Eg on shaft.
Also with DC pumps you can design a motor block to have multi pole motor. Which makes if virtually vibration less. Something you can’t do with a 115v AC two pole motor.
There are benefits, as mentioned above but there are benefits to AC such as reliability. Basically you have to choose what works best for you.
AC pumps with high reliability are Eheim and Sicce syncra the Fluval.
Let’s not forget the Fluval is a great and quite pump but it still has a chip in the motor block which can fail. This is why I am putting it behind Eheim and Sicce in reliability.