Submersible Sump Pump Installation
A submersible sump pump sits entirely inside the pit, sealed against water, running quieter and handling deeper water than pedestal designs. FlowFast connects you with an independent local plumber who installs the submersible unit, sets the float or electronic switch, connects the discharge with a check valve, and tests full cycles.
- Connected with an independent local pro — never a call center queue.
- Part of our Sump Pump Installation & Repair services — explained up front.
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Sump Pump Installation & RepairSump pump not working before storm season? Battery backup options, failure signs, and how to get connected with an independent local plumber.
View all Sump Pumps servicesSubmersible pumps are the modern standard for most homes: the whole unit sits in the pit, the water itself cools the motor, and because it is underwater it runs noticeably quieter than a pedestal pump. They handle deeper pits, higher water volumes, and finished basements where a tall pedestal column would be in the way or an eyesore. The sealed design also means a pit cover fits cleanly over the whole installation.
FlowFast connects you with an independent local plumber who installs submersible pumps sized to the home's water load. The pro sets the pump on a stable base to keep the intake off the pit floor, positions the float switch with room to move, and connects the discharge line with a check valve. Because the unit is underwater during operation, correct float adjustment matters even more: a mis-set switch means short-cycling that wears out an otherwise excellent pump.
Warning signs
Signs you need this service
- You have a finished basement and want the quietest pump option that hides fully under a pit cover.
- Your pit is deep or collects a high volume of water that a smaller pump struggles to move.
- An old pedestal pump is too loud or too tall for the space and you want a modern replacement.
- You are installing a new system and want the design most plumbers recommend for typical homes.
What to expect
The process, step by step
The pro lowers the submersible unit into the pit on a stable base that keeps the intake clear of silt.
They position the float switch with full travel room and connect the discharge pipe with a check valve.
The pit cover is fitted over the installation, with the discharge and power cord routed through sealed openings.
Test cycles with poured water confirm quiet operation, correct activation levels, and clean shutoff.
Prevention
How to avoid this problem
- Keep the pit covered to block debris that could clog the intake or tangle the float.
- Test the pump seasonally, since a submerged unit gives fewer visible warning signs before failing.
- Do not let the pump sit in silt; a stable base keeps the intake elevated above sediment.
Frequently asked questions
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