Last updated: July 2026
A sump pump is one of the most important pieces of equipment in a basement-prone home.
What Does a Sump Pump Do?
A sump pump sits in a pit dug below your basement floor. When water collects in the pit, a float switch triggers the pump and pushes water out through a discharge line away from your foundation.
Types of Sump Pumps
Submersible pumps sit inside the pit, fully submerged. They are quieter and more efficient. Pedestal pumps have the motor above the pit — easier to service, louder. Battery backup pumps are essential in storm-prone areas and run on a 12V battery lasting 5-7 years.
Choosing the Right Horsepower
Most residential pits need 1/3 HP or 1/2 HP. 1/3 HP handles pits up to 7 feet deep with minimal elbows. 1/2 HP handles deeper pits and longer runs. When in doubt, go 1/2 HP.
2026 Cost Breakdown
| Component | Cost |
|---|---|
| Submersible pump | $100-$250 |
| Battery backup | $150-$350 |
| Check valve | $15-$30 |
| Professional install | $300-$700 |
Full installation with labor: $500-$1,200 depending on region.
Maintenance
Monthly: test by pouring water into the pit. Every 6 months: check discharge line. Annually: clean pit, check float, inspect check valve. Every 7-10 years: replace pump.
The Bottom Line
A sump pump is a one-time investment that protects your entire basement from water damage. Choose the right HP, install a check valve and backup battery, and do a quick annual check. It will run reliably for a decade or more.
