Sump Pump Repair & Replacement Cost Guide

Average Cost of Sump Pump Repair

On average, homeowners spend $150 to $750 to repair a sump pump, depending on the issue and local labor rates. Minor fixes such as floats, switches, or check valves usually fall on the low end, while electrical or motor-related problems trend higher. Emergency calls, hard-to-access pits, or significant discharge line work can add to the bill.

Common Repairs and Their Costs

• Float or Float Arm Replacement: The float tells the pump when to turn on. Typical cost: $75 to $125 (parts and labor).
• Switch Replacement (pressure, vertical, or diaphragm): Worn or stuck switches are a top failure point. Typical cost: $150 to $350.
• Check Valve Replacement: Prevents water from flowing back into the pit after the pump shuts off. Typical cost: $125 to $200.
• Discharge Pipe Repairs (leaks, clogs, or freeze damage): May include couplings, heat tape, or rerouting. Typical cost: $100 to $225 (more if extensive exterior work is needed).
• Power Cord or Outlet/GFCI Issues: Diagnosing and correcting failed cords or tripped GFCIs. Typical cost: $100 to $300 (electrical work can increase costs).
• Motor or Impeller Service: Viable on newer, higher-end units but often not cost-effective on older pumps. Typical cost: $400 to $800 — at this level, many professionals recommend replacement.

If the pump is older, out of warranty, and needs a motor or impeller repair, compare the repair estimate to a full replacement quote before proceeding.

Average Cost of Sump Pump Replacement

Replacing a failed pump typically costs $800 to $1,600 all-in. That includes the new unit plus labor to disconnect the old pump, connect the replacement, reseal the pit cover if present, test operation, and verify the check valve or discharge line. Replacement is generally less expensive than a brand-new installation because your pit, discharge line, and electrical are already in place.

Typical Ranges by Pump Type

• Pedestal pumps: $300 to $900 installed (unit is less expensive and easier to access).
• Submersible pumps: $800 to $1,600 installed (quieter, sealed, and more powerful).

» Related: Sump Pump Installation Cost Guide

Factors That Influence Replacement Costs

• Pump Type and Capacity (HP and GPM): Higher horsepower and flow ratings increase cost.
• Brand and Warranty: Premium brands and longer warranties add to the price.
• Site Conditions: Tight pits, sealed lids, or code-required venting require more labor.
• Electrical Needs: New or corrected GFCI outlets, dedicated circuits, or cord and plug changes increase costs.
• Discharge Modifications: Replacing pipe sections, adding freeze protection, or rerouting drains adds materials and time.
• Emergency Service: After-hours calls often carry premium rates.

» Related: Best Sump Pump Brands of 2025

Sump Pump Repair vs. Replacement — Which Makes More Sense?

Use the “50% rule” as a quick check: if a repair will cost half or more of a replacement, and the pump is over five to seven years old or out of warranty, replacement often delivers better reliability and value. Consider replacement sooner if:

• You’ve had repeated failures within a year or two.
• The motor is noisy, overheating, or seized.
• You want to upgrade to a quieter submersible model, higher capacity, or smart monitoring system.
• You’re adding a battery backup and want both units matched and warrantied together.

Additional Costs to Consider

• Battery Backup System: $200 to $500 (more with automatic chargers or high-capacity batteries).
• High-Water Alarm or Smart Monitor: $40 to $250 (basic to Wi-Fi connected).
• New or Upgraded Check Valve: $10 to $125 (part) plus labor.
• Sump Pit Repairs or New Basin: $250 to $900 (liner, lid, or sealing).

DIY vs. Professional Repair or Replacement

DIY can make sense for confident and experienced homeowners replacing a like-for-like pump, a check valve, or a float or switch in a simple, accessible pit. Expect to spend $100 to $300 on basic parts and supplies (excluding the pump itself). Always shut off power, use a GFCI outlet, and follow manufacturer instructions.

Hire a professional when electrical work, code compliance, sealed lids, tight spaces, or exterior discharge changes are involved. A qualified technician will size the pump correctly, verify head height and flow, test the check valve, seal the lid, and confirm safe operation — reducing the risk of a callback during the next storm.

» Related: Basement Waterproofing Cost

Bottom Line

• Repairs usually run $150 to $750 and cover floats, switches, check valves, and minor discharge fixes.
• Replacements typically cost $800 to $1,600 for a complete swap, with pedestal models on the low end and submersibles on the high end.
• Compare the repair estimate against the unit’s age, warranty, and reliability. If costs are stacking up or the motor is failing, replacement is often the better investment.

If you’re ready to price your options, Modernize can match you with recommended local pros for fast diagnostics and side-by-side quotes.