So you have a sump pump, protecting your basement from water accumulation by pumping it out of the basement and away from the home. How do you know when to replace this necessary tool? There a few signs that mean you can no longer just repair your sump pump, such as noise, stopping working altogether, and electrical issues.
If your sump pump makes loud noises the entire time it runs, the motor is probably going out. Also, if your pump refuses to turn on, assure the unit is receiving electricity and try to manually operate the float. If the float is fine and the electricity is running to the pump, the pump has burnt out. If you suspect your pump has electrical problems, such as broken wires inside the fixture, it is much safer and easier to just replace the entire unit.