What cause pool pump making humming noise?

I am assuming that you are having bearing problems if the motor is sounding noisy - growling. Sounds like you have had a seal leaking for a while. If you can see moisture around and at the base of the pump then, yes you have a seal leaking. The water has gotten into the front bearing. Some pumps - like the Hayward brand, you can not see the leak until it has become profuse. Have the motor, pump seal and gaskets replaced. Repeated, regular visual and audio inspection of the pool equipment could have prevented this situation.

Most pool pump motors above 2 hp may be worth doing a "bearing job" or other work depending upon age and condition of the motor and would be considered less expensive to do the repair. With motors below the 2 hp rating, it may be best to just remove and replace the motor.

*** All motors need a second chance and more to assume a motor can't be repaired can be a costly mistake . motors are around 200-800.00 you don't throw away a car due to a flat tire...

*** Bring your motor to your (local pool pump motor repair guy) testing should be free. if you bring them the motor ! if not find one that will, Its easy just search this and ask him or her "how do i make my pool motor last longer" ?? I have seen motors over 40 years old.

***electric motors are in no way like a car motor! no pistons,brushes or oil to change.

*** Just bearings and seal, keep the area around the motor clean and watch for the wet spot under the pump and or if it sounds even just a little bit noisy have it repaired. The charge should be around 75.00 To make your motor purr again and save on your electric bill and yes a noisy motor sucks more power (can you say high power bill) no joke its the biggest consumer of power in or around your house 8-10 hrs a day 7 days a week 365 days a year and if you don't run it like it should be it can cause pool issues( bad ones )

So remember a clean pool is a safer pool. *** jay the pool pump motor repair guy in longwood Florida Answered the best ***