Basement Waterproofing · Costs, budgets and timelines · Updated November 2026
Sump Pump Replacement Cost: Primary Pumps and Battery Backup
Replacing an existing sump pump typically costs $275–$1,000, according to HomeAdvisor. A new installation with a pit averages about $1,338, and a system with battery backup averages about $1,220.
Costs at a glance
| Item | Typical cost |
|---|---|
| Replace an existing pump | $275–$1,000 |
| New sump pump installation | $642–$2,085 (about $1,338 average) |
| Pump with battery backup | About $1,220 average |
| Pedestal pump (product) | $80–$150 |
| Submersible pump (product) | $150–$625 |
From HomeAdvisor (page updated August 4, 2022). Costs may have risen since.
Pedestal vs. submersible
- Pedestal: the motor sits above the pit. Less expensive and easy to service, but louder and usually lower capacity.
- Submersible: the pump sits in the pit. Quieter and better for heavy water, but costs more.
Why add a battery backup
Heavy storms often knock out power exactly when the pump is needed most. A battery backup pump takes over when the main pump loses power or fails. See what to check before buying a sump pump battery backup.
Signs it is time to replace
- The pump runs constantly or cycles too often (sump pump runs constantly).
- It is noisy, vibrates or struggles to keep up.
- Visible rust or a failed float switch.
- It is several years old and you have never tested it. Pour water into the pit to test it a few times a year.
Sources
- HomeAdvisor: Sump pump installation cost, page updated August 4, 2022; accessed November 2026
Cost figures are national ranges from the sources listed above and in our basement waterproofing cost guide, not a quote from FixFinch or any contractor.