What a sump pump replacement costs in 2026
| Job | Installed price |
|---|---|
| Replace the pump, pit already there | $800 to $1,500 |
| New install, 1/3 hp | $800 to $1,200 |
| New install, 1/2 hp | $1,000 to $1,600 |
| New install, 3/4 hp or more | $1,600 to $2,500 |
These are Angi's national installed prices. HomeGuide puts a straight swap lower, at $400 to $700, so a simple replacement can come in under the calculator's low end.
The extras that change the price
| Extra | Typical cost |
|---|---|
| Battery backup pump | $1,000 to $2,000 |
| Water-powered backup pump | $1,200 to $2,500 |
| High-water alarm or Wi-Fi monitor | $100 to $500 |
| Check valve | $50 to $300 |
| Discharge line upgrade | $50 to $300 |
| Permit | $50 to $250 |
Signs it's time to replace it
- It runs but the water level doesn't drop.
- It turns on and off every few seconds, or runs nonstop.
- It hums but doesn't pump, or it's loud and rattling.
- It's past its usual life: 5 to 20 years for a submersible pump, 10 to 30 for a pedestal pump (HomeGuide).
Test it a few times a year: pour a bucket of water into the pit and watch it turn on, empty the pit, and shut off.
Submersible or pedestal?
Submersible
Sits in the water at the bottom of the pit. Quieter, takes up no floor space, and handles more water, but costs more and is harder to reach.
Pedestal
The motor stands above the pit on a post. Cheaper and easier to service, and it tends to last longer, but it's louder and sticks up out of the floor.
Questions people ask
How much does it cost to replace a sump pump?
Swapping a pump in a pit that is already there runs about $800 to $1,500 installed. A new install, pit and all, runs about $800 to $2,500 depending on pump size. A backup pump adds $1,000 to $2,000 or more.
How long does a sump pump last?
HomeGuide puts submersible pumps at 5 to 20 years and pedestal pumps at 10 to 30 years. A pump that runs often, like one in a wet basement, wears out sooner.
Do I need a battery backup sump pump?
If your basement has finished space or anything you cannot lose, a backup is cheap insurance. Storms that knock out power are the same storms that fill the pit, and a main pump without power does nothing.
Should I pick a bigger pump?
Only if the pit fills fast. Most homes do fine with 1/3 hp. A pump that is too big for the pit turns on and off constantly, which wears it out sooner.