Float Switch Repair
Repair or replace a faulty float switch — the most common cause of sump pump failures, either not turning on or running constantly.
National average cost: $105–$210 • Free diagnosis, no credit card needed
Low estimate
$90
National average
$150
High estimate
$225
National averages based on Angi, HomeAdvisor, and Thumbtack data (2026). Local rates vary — enter your city below or use the chat for a local estimate.
What to Expect with Float Switch Repair
The float switch is the most failure-prone component in any sump pump system. It's a simple device — a buoyant ball or arm that rises with the water level and triggers the pump to run. But simple doesn't mean bulletproof. Float switches fail in two predictable ways: stuck "on" (pump runs constantly) or stuck "off" (pump never activates).
Float switch problems are especially common after extended dry periods when sediment settles in the pit, or after heavy use during a major storm when the mechanism wears rapidly. A replacement float switch itself costs $15–$60 at a hardware store. Professional replacement service runs $100–$200 installed, as it requires draining the pit, pulling the pump, and verifying the new switch triggers at the right water level.
If the pump is 5 or more years old and the float switch has failed, ask your contractor to assess the overall pump condition. Sometimes a float switch failure is the first sign of a pump that's nearing end of life — catching it now saves an emergency call later.
Available in Your Area
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Frequently Asked Questions
How much does float switch repair cost? ▼
Nationally, float switch repair typically costs $105–$210. Your local market, the extent of the work, and whether emergency service is needed will affect the final price. Use our free diagnosis tool to get a realistic estimate before anyone shows up.
How do I know if I need float switch or a full replacement? ▼
A good rule of thumb: if the repair cost exceeds 50% of a new pump's installed price, replace it — especially if the pump is over 7 years old. Our AI chat can walk you through the diagnostic questions a technician would ask to help you figure out which situation you're in.
How quickly can a contractor respond? ▼
Most contractors in our network can respond same-day for urgent pump issues, especially during business hours.
Do I need a permit? ▼
Repairs and replacements typically do not require a permit. New installations and pit excavation do. Your contractor will advise based on the specific scope of work.
Why sumppump.ai
- ✓ Licensed & insured contractors only
- ✓ Free AI diagnosis — no credit card
- ✓ 24/7 emergency service available
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