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Pedestal vs Submersible Sump Pump: Which Should You Choose?
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Side by side
| Pedestal (upright) | Submersible | |
|---|---|---|
| Where the motor sits | About a foot above the top of the sump; the motor isn't meant to get wet (NDSU). | Designed to be submerged; sits on the bottom of the sump (NDSU). |
| Switch | A ball float on a rod turns the switch near the motor. The switch is visible without looking into the sump (NDSU). | A float switch controls on/off. Float setups differ by maker, and the on/off distance is adjustable on some models (NDSU). |
| Noise and efficiency | Not covered in the sources we opened. | Quieter and more efficient than pedestal pumps (Boston). |
| Price | Less expensive than submersible (Boston). | More expensive than pedestal (Boston). Boston's general estimate for installing a sump pump is approximately $3,500, with the pump type not specified. |
| Useful life | Boston gives 7 to 10 years for a sump pump installation, without splitting by type. | Same estimate. |
Sources: NDSU Extension, City of Boston.
Both types need
- A check valve on the outlet pipe so water doesn't flow back into the pit (NDSU Extension).
- A clear discharge pipe that directs water away from the house (NDSU Extension).
- Testing before wet seasons. See how to test.
- A plan for outages. See the backup checker.
How to choose
- Look at your pit. A pedestal pump needs head room above the pit for its motor (NDSU says the motor sits about a foot above the sump).
- Decide how much you care about noise and visibility. Boston says submersible pumps are quieter; NDSU says the pedestal switch is easy to see.
- Match capacity to your needs. Ann Arbor lists primary pump flow of about 30 gpm (1/3 HP) or 60 gpm (1/2 HP). Ask a licensed pro what your pit needs.
- Check local permits and the discharge rules before you buy. See replacement and installation.
Common questions
What is the difference between a pedestal and a submersible sump pump?
NDSU Extension says the two basic models are upright (pedestal) and submersible. On a pedestal pump the motor is about a foot above the top of the sump and isn't meant to get wet. A submersible pump is designed to be submerged and sits on the bottom of the sump.
Which type is better?
NDSU Extension says either works well with proper maintenance. Boston says submersible pumps are quieter and more efficient than pedestal pumps, but more expensive.
Which type is easier to check?
NDSU Extension notes one advantage of the pedestal pump: the on/off switch is visible without having to look into the sump.
What size do I need?
Ann Arbor says primary pumps typically run at about 30 gallons per minute (1/3 HP) or 60 gallons per minute (1/2 HP). We found no extension page on matching pump size to a house, so ask a licensed pro.
Related guides
- What is a sump pump?
- Sump pump cost
- Replacement and installation
- Battery and water-powered backup
- Sump pump making noise
Free printable: Sump Pump Fall Check
A ten-minute test before the wet season. Download the one-page PDF now, or get it by email along with a short series of five helpful emails.