How to Replace a Sump Pump: Professional Tips and Tricks

When the basement floods, you could be in for thousands of dollars in potential damage, cleanup, and repair. No matter what’s causing the flooding, sump pump replacement can help minimize the effects of water in your basement. This guide walks you through how to replace a sump pump, including troubleshooting tips and when to call in the pros.

Signs Your Sump Pumps Might Need to Be Replaced

Any time your sump pump is not working, it might be time to replace it. A failing sump pump can quietly lead to disaster during the next heavy rainstorm. Look for these red flags that it’s time to replace yours: 

• Strange noises like grinding, rattling, or humming
• Constant running or a pump that won’t turn on
• Visible rust or corrosion on the pump housing or switch
• Water is rising too high in the sump pit
• An aging unit—if it's over 7–10 years old, it's nearing the end of its life

Preparing for Sump Pump Replacement

Before you start the sump pump replacement process, make sure you:

• Purchase a replacement pump with the correct horsepower, discharge size, and vertical lift rating for your home.
• Turn off the power to the pump at the breaker.
• Unplug the unit from the outlet.
• Gather your tools, including pliers, a screwdriver, a utility knife, and PVC glue (if needed).

If this all sounds like a bit much, remember: not everyone is comfortable working around water and electricity. There's no shame in asking who replaces sump pumps. A licensed plumber is your best bet.

Step-By-Step Guide to Replacing Your Sump Pump

Here’s your go-to guide on how to change a sump pump.

Step 1: Test the Existing Pump

Before you rip anything out, test your sump pump. Fill the sump pit with a bucket of water or run a water hose into the pit and see if the pump activates. If it doesn’t turn on, the float switch may be stuck or broken—a common failure point. If the motor runs but no water is removed, the impeller or check valve could be the culprit.

Step 2: Remove the Old Sump Pump

1. Unplug the pump and shut off any connected power sources.
2. Disconnect the discharge pipe—you may need to loosen hose clamps or cut PVC piping.
3. Detach the check valve if it's connected.
4. Lift out the pump carefully, as it may be heavy or covered in grime.

Step 3: Inspect and Prepare the Pit

1. Clear out debris, mud, or gravel from the sump pit.
2. Rinse or replace the check valve if it’s worn out.
3. Inspect the pit liner for cracks or signs of damage.

Step 4: Install the New Pump

1. Attach the discharge pipe and check valve to the new pump.
2. Lower the pump into the pit, making sure it sits level and stable.
3. Plug it in and restore power at the breaker.

Step 5: Test the New Pump

1. Pour water into the pit to ensure the pump activates properly.
2. Confirm that the pump turns off automatically when the pit is emptied. It’s normal for some water to fall back into the pit from the discharge pipe.

Professional Tips and Tricks

The basic steps of replacing a sump pump are easy enough, but here are a few professional tips to make your sump pump usage even smoother.

• Use a battery backup or water-powered backup sump pump system to protect your basement during power outages.
• Choose a pump with a cast-iron core, which dissipates heat better than plastic models.
• Label your float switch, power supply, and discharge line for easier troubleshooting in the future.
• Check the pit annually and test the pump every few months with a bucket of water.

When to Call the Professionals 

DIY replacement works for some sump pumps. But there are times when you shouldn’t handle things on your own. Here’s when it’s time to call a professional plumber:

• You see frequent flooding or backup
• The pit or check valve is damaged
• You're unsure of the electrical connections
• You want to upgrade to a more powerful or battery-backed system

A licensed plumber can complete a sump pump replacement in under two hours and ensure everything is up to code.

Call the Sump Pump Replacement Experts

If you need help installing or replacing a sump pump, contact the plumbers at Roto-Rooter. We’re on hand to help you with any routine plumbing maintenance. We’re also on call 24/7 to address any flooding or water damage emergencies if your sump pump should fail.

FAQs About Replacing a Sump Pump

Can I replace my sump pump myself, or should I hire a pro?

Yes, you can replace a sump pump if you're comfortable with plumbing and electrical work. But for safety and efficiency, consider professional help.

Is it difficult to change a sump pump?

Not necessarily, but it does require caution, especially around electrical connections and waterproofing. Mistakes could lead to flooding or pump failure.

How long does it take to replace a sump pump?

If you're handy, expect the process to take about 1-2 hours. A professional can usually complete the job in under an hour.

How long do sump pumps usually last?

Most pumps last 7 years. Heavy usage or poor maintenance can shorten their lifespan. Write down the installation date so you know how often to replace the sump pump.

Will homeowners insurance cover sump pump issues?

Standard policies usually don’t cover sump pump failure or water damage caused by one unless you’ve added special flood or water backup coverage.