Replacing a Sump Pump


Sump Pumps remove water from a basement or crawl space and send it through a discharge line that exits the home. 

This project guide outlines the procedures for installing or replacing a sump pump in most residential applications.




Step 1: Remove the old pump

Remove the Old Pump Unplug the sump pump and disconnect the discharge line entering it. (You may need to use two pairs of water-pump pliers.)

Step 2: Level the new pump

Level the New Pump Make sure the new pump sits level in the pit  and use plastic or composite shims to level if necessary.

Step 3: Connect the discharge line

Connect the Discharge Line

• Reuse the old piece of discharge line from the old pump or cut a new piece if

• A check valve will prevent water from flowing from the discharge line back into the 
  pump when it cycles off, reducing the chance of flooding and improving the 
  lifespan of the pump. If your new sump pump does not include an integrated check
  valve, consider adding one to the discharge line in this step.

• Connect the outlet pipe to the main discharge line, either by tightening a union or 
  by slipping on a rubber fitting and tightening the hose clamps.  


Step 4: Turn on the electricity

Turn on the Electricity • Plug the cord into a grounded outlet. 

• Test the pump by filling the pit with water until the pump is activated.