The short answer
Power Outages and Electrical Issues
A power outage is a common reason for sump pump failure during a storm. Your pump simply cannot run without electricity. Even with power, a tripped circuit breaker or a damaged power cord can stop the motor.
Check your home's electrical panel to ensure the sump pump's circuit is on. A dedicated outlet with a ground fault circuit interrupter, or GFCI, is recommended for safety. If the outlet trips frequently, you may have a wiring problem or a failing pump motor that draws too much current.
Clogged Intake and Discharge Lines
Debris like gravel, silt, or sticks can clog the pump's intake screen or the impeller. This blockage severely reduces pumping capacity. During a storm, sediment stirred up in the pit is more likely to be sucked into the pump, causing it to work harder and potentially overheat or seize.
The discharge pipe that carries water outside can also become obstructed. A stuck check valve, a kinked section, or an outdoor blockage can prevent water from exiting. Water then flows back into the pit, forcing the pump to run continuously without lowering the water level.
- A screen clogged with dirt and debris.
- A jammed impeller inside the pump housing.
- A frozen or kinked discharge pipe outdoors.
- A stuck or failed check valve in the line.
- Root intrusion from nearby trees and plants.
- Mineral scale buildup from hard water.
Mechanical Failure and Component Wear
Pumps have a limited lifespan, often five to ten years. Continuous use during a storm can push an old, worn-out pump to its breaking point. The bearings or seals may fail, or the motor can burn out. Regular maintenance helps you spot wear before a critical failure occurs.
The float switch is a crucial component that tells the pump when to turn on and off. If it gets stuck in the 'off' position or fails mechanically, the pump will not activate no matter how high the water rises. Testing the float switch monthly is a good practice.
Insufficient Capacity or Installation Problems
Your pump may be too small for the volume of water entering the sump pit during an intense storm. This is known as being underpowered. A pump's capacity is measured in gallons per hour. If the inflow exceeds that rate, the water level will rise despite the pump running.
Improper installation can also cause failure. The pump must sit level on a stable base to avoid tipping and sucking air. The discharge pipe should be the correct diameter and slope away from the foundation without sharp bends that restrict flow.
What to Do After a Sump Pump Failure
If your home floods, safety comes first. Do not enter standing water if electricity is present. Shut off power to the area at the breaker box. Then, contact local water damage pros for emergency water extraction. They have industrial pumps and vacuums to remove water.
After water removal, a thorough inspection and structural drying are necessary to prevent mold and wood rot. The pros use moisture meters and dehumidifiers to dry walls and flooring. They can also help you assess the failed pump and discuss repair or replacement options.
- Ensure electrical safety before entering a flooded area.
- Call for professional water extraction to limit damage.
- Arrange for structural drying to protect your home's materials.
- Have the failed sump pump inspected to diagnose the cause.
- Consider upgrading to a more powerful pump or adding a backup system.
- Review your insurance policy, as coverage varies.
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Call Now (702) 878-3744Frequently asked questions
How can I prevent my sump pump from failing next time?
Test your pump monthly by pouring water into the pit. Keep the intake screen clean and ensure the discharge line is clear and directs water away from your home. Consider installing a battery backup and a water alarm to alert you of rising water levels.
Should I repair or replace a failed sump pump?
A simple repair like unclogging a switch or replacing a check valve may suffice. For an old pump, repeated failures, or a motor burnout, replacement is often more reliable. A local pro can evaluate the unit and advise on the most cost-effective long-term solution.
Does homeowners insurance cover flood damage from a failed pump?
Coverage depends entirely on your specific policy. Some policies cover water damage from a mechanical failure, while others require a separate flood insurance rider for groundwater. Policies vary, and your insurer decides what is covered. Check your policy documents and contact your agent.
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