Sump Pump Running Nonstop? Here’s What You Need to Know Before It Burns Out

Is Your Sump Pump Acting Like It Never Sleeps? That’s a Problem
If your sump pump has suddenly become the hardest working appliance in your house, running around the clock without taking a break, something’s not right. In fact, a constantly running sump pump is one of the top signs your system is heading toward failure—and fast.
So if you’re wondering, “Why is my sump pump running nonstop?” you’re not alone. This issue is more common than you think, and while it may not seem urgent, it can lead to burned-out motors, sky-high energy bills, and even flooded basements if ignored.
Let’s break down the top causes, signs, and what you need to do right now to stop the madness—and save your basement.

🧠 FAQ: Why Is My Sump Pump Constantly Running?
1. Is it normal for a sump pump to run continuously?
Nope. A properly functioning sump pump should only run when water in the sump pit reaches a certain level. After pumping out the water, it should turn off automatically. If it keeps running even when the pit is dry, something is definitely off.

🔍 7 Common Reasons Your Sump Pump Is Running Nonstop1. Stuck Float Switch
The float switch tells the pump when to turn on and off. If it’s jammed or tangled, it can signal the pump to stay on continuously.
✅ Fix: Check the float and reposition or replace it. Make sure it moves freely with the water level.

2. Faulty Check Valve
The check valve prevents water from flowing back into the sump pit after being pumped out. If it's broken or missing, water returns—triggering the pump over and over again.
✅ Fix: Install or replace the check valve with a high-quality, spring-loaded version.

3. High Water Table or Heavy Rainfall
Sometimes your pump is just doing its job. In areas with naturally high water tables (hello, New Jersey) or during storm season, it may need to run frequently.
✅ Fix: Upgrade to a more powerful pump or install a secondary unit to help during high-flow times.

4. Clogged or Frozen Discharge Line
If the water has nowhere to go, it just cycles back into the pit, causing the pump to work overtime.
✅ Fix: Clear the discharge line. In winter, consider adding pipe insulation or a freeze guard.

5. Undersized Sump Pump
If your pump isn’t powerful enough to handle the water volume in your basement, it’ll keep running just to keep up.
✅ Fix: Consult a pro about upgrading to a larger-capacity model.

6. Wiring or Electrical Malfunction
If the electrical switch is stuck or short-circuited, the pump could be running nonstop even without water.
✅ Fix: Have a licensed technician inspect and rewire the system if necessary.

7. Pump is Nearing the End of Its Life
Older pumps (usually over 7–10 years old) can develop issues that make them run inefficiently or continuously.
✅ Fix: If repairs aren’t working, it may be time to replace the pump with a newer, energy-efficient model.

📊 Shocking Stats About Overworked Sump Pumps

• According to the American Society of Home Inspectors, more than 60% of American homes suffer from below-ground wetness.
• A sump pump running 24/7 can burn out in less than 6 months if not addressed.
• Replacing a flooded basement can cost $3,000 to $25,000—and insurance may not cover sump pump failure due to neglect.

⚠️ Risks of Letting Your Sump Pump Run Nonstop
You might think, “It’s still working, so what’s the big deal?”
But here’s the reality:

• Burned-out motor – Running without rest shortens lifespan dramatically
• Higher energy bills – A sump pump running 24/7 can eat electricity
• Flood risk – A failed pump won’t protect your basement during the next storm
• Noise and vibration – A constantly running pump makes your basement loud and uncomfortable
• Foundation risk – Improper drainage can lead to long-term structural issues

💡 Quick Tips to Troubleshoot at Home
If you're handy, here’s what you can try before calling in a pro:

1. Unplug the pump for 15 minutes. Does it stop? Does it restart again right away?
2. Test the float by pouring water into the pit. Watch how it responds.
3. Check the discharge pipe for kinks, blockages, or freezing.
4. Listen for humming without pumping—this often means the motor’s struggling.
5. Inspect the check valve—if it’s missing, install one immediately.

🛠️ When to Call a Sump Pump Professional
It’s time to bring in a pro if:

• The pump keeps running even when the pit is dry
• You hear grinding, buzzing, or clicking
• The float switch or wiring seems off
• You've already tried basic troubleshooting without success
• Your pump is older than 8 years

A sump pump tech can diagnose the exact issue, suggest cost-effective repairs, or install a new unit with a warranty.

✅ Conclusion: Don’t Let a Noisy, Overworked Pump Catch You Off Guard
​A sump pump that won’t stop running is more than annoying—it’s a sign your system is overworked, underpowered, or malfunctioning.
Ignoring it could mean a burned-out pump just when you need it most. And that means risking thousands in water damage.
Whether the fix is a new check valve, a float switch adjustment, or a full replacement, the sooner you act, the safer your basement will be. Trust us—your home (and your wallet) will thank you later.