Short answer
Stuck or failed float switches, leaking check valves, clogged intakes and frozen discharge lines are usually repairable, often for about $75-$300. A burned-out motor, a cracked housing or a pump near 10 years old usually makes replacement the better buy. In Anderson, where a failed pump in spring can mean water within hours, fix the cause fast and add a backup.
When a sump pump stops working on Anderson’s wet ground, the pit can overflow quickly in a wet spell. Here’s how to narrow down the problem and decide whether to fix or replace.
First, safety
Don’t stand in water near the outlet, and unplug the pump before reaching into the pit. If water is near the electrical panel, cut the power only if you can reach the breaker from a dry spot. If water is rising now, follow basement flooding right now while you work.
Checks in order
- Power. Reset the GFCI outlet and check the breaker. If it trips again, stop and call a pro.
- Float switch. Make sure the float isn’t caught on the pit wall, the cord or the discharge pipe. Lift it gently with a dry stick after plugging the pump back in. If the pump starts, the float was stuck.
- Piggyback switch test. If the pump has a separate switch plug, plug the pump straight into the outlet. If it runs, the switch has failed.
- Intake and impeller. Unplug it, lift it out, and clear silt and gravel from the screen and impeller.
- Discharge. If the pump runs but nothing comes out outside, the line may be frozen, crushed or clogged.
What’s usually repairable
| Problem | Fix | Typical cost |
|---|---|---|
| Stuck or failed float switch | Free it or replace the switch | $75-$300 |
| Leaking check valve, short-cycling | Replace the valve | $100-$200 |
| Clogged intake or impeller | Clean the pit, screen and impeller | $100-$225 |
| Frozen or blocked discharge | Clear the line, add freeze relief | $100-$300 |
Published ranges from U.S. cost guides (sources). After-hours emergency visits typically add $100-$200.
When to replace instead
- The motor has burned out (silent with power and a lifted float).
- The pump is about 7-10 years old, or works hard every spring and is getting close.
- The housing is cracked or corroded.
- It can’t keep up during the wettest weeks.
Replacing a pump in an existing pit typically costs $400-$1,200. See replacement.
When it isn’t the pump
- It runs all the time, even in a dry summer: a stuck switch, a leaking check valve, or discharge water flowing back toward the house. In spring it may simply be the water table. See sump pump running constantly.
- Silt and sand fill the pit: the drain tile is carrying soil. The drainage needs attention, not just the pump.
- Water still appears at the walls while the pump works: water isn’t reaching the pit. That’s a drain tile question.
Repair or replace: a rule of thumb
| The pump | The problem | Usually |
|---|---|---|
| Well short of 7 years | Switch, check valve or clog | Repair |
| Approaching 7-10 years | Failed switch | Repair now, plan the replacement |
| 7-10 years or older | Anything beyond a clog | Replace |
| Any age | Burned-out motor, cracked housing | Replace |
Preventing the next failure
- Test before spring. Pour water into the pit and watch a full cycle, then test the backup the same way.
- Clean the pit once a year, and lift out silt and gravel before they reach the intake.
- Replace the check valve with the pump. Old valves are a common cause of short-cycling.
- Add a high-water alarm if you don’t have one.
- Know the workload. Long spring run times on Anderson’s high water table are the main reason pumps wear out early here.
- Keep the outlet open in winter. See discharge and freezing.
Questions to ask the repair company
- What failed, and what caused it?
- How much life does the rest of the pump have left?
- Can this pump keep up with the pit’s spring inflow?
- Is the repair under warranty?
Have this ready when you call
The pump brand, model and age; what it’s doing (silent, humming, cycling, running nonstop); whether water is on the floor; the pit diameter and discharge size if you can see them; and whether you have a backup. The full system is explained on sump pumps.