When to replace sump pump

Old Age: Though the average life expectancy is five to seven years, you may get more or less use depending on how hard and how often the sump pump has to work. Have a professional examine the pump to determine what shape it's in.
Loud and/or Unusual Noises: Goes for all machines, right? Some noise is normal, but if it's louder than you remember, call in a pro to take a listen. Rattles, thunks, knocking and grinding sounds may mean a motor problem.
Cycling On and Off: If your sump pump goes through constant cycles of turning on and off-or doesn't turn on or off when it should-call in a professional. You may need a new pump, or there may be a problem with the power or float switch.
Won't Stop Running: If your sump pump runs continuously, it may be unable to handle the water load the way it should. It may be time to replace it.
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