High-flow submersible · FLUENTPOWER

FLUENTPOWER FSP550C 1/2 HP Pump

A float-switch utility pump with a manual mode

Updated October 2026

Quick verdict

Flexible auto or manual.

Strength
Float, check valve and rope.
Trade-off
Leaves 2 in in auto mode.
Right buyer
Pits and flooded areas.
Horsepower
1/2 HP
Max flow (maker)
42 GPM
Max head / lift (maker)
26 ft
Housing
thermoplastic
Voltage
115 V
Power source
Corded Electric
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Why it matters

The FSP550C has a built-in float: in automatic mode it starts above about 4 in of water and stops near 2 in. Manual mode drains to about 1/2 in, but you must unplug it before it runs dry.

FLUENTPOWER rates it at up to 2,500 GPH and 26 ft from 1/2 HP. It comes with garden hose and 1 in adapters, a 1-1/2 in adapter, a check valve and a 26 ft rope, and passes solids up to 1/5 in.

Who it's for, and who should skip it

Good fit if

  • Temporary sump use
  • Pools and window wells
  • Owners who want both modes

Look elsewhere if

  • Sewage or grey water with solids
  • Unattended running on manual models

Pros and cons

Pros

  • Auto and manual modes
  • Check valve included
  • Rope for lifting

Cons

  • Leaves 2 in in auto
  • Import brand
  • Manual mode needs watching

Limitations to weigh

  • Manual pumps run only while switched on; stay with the pump so it doesn't run dry.
  • Rated flow is at little or no lift; through a garden hose or up a stairwell, expect much less.

Specifications

Every figure below comes from the source shown in brackets. Where the maker doesn't state something, we say so instead of estimating.

MaterialPlasticRetailer
Dimensions (seller)7.9"L x 6.5"W x 11.7"HRetailer
Product weight8.4 lbRetailer
Max flow (maker)42 GPMRetailer
Max head / lift (maker)26 ftRetailer
Voltage115 VRetailer
Horsepower1/2 HPRetailer
Model numberFSP550CRetailer
HousingthermoplasticRetailer

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Final verdict

A versatile pump for pits and puddles alike.

Where to buy

Our links open this exact model's product page. Prices and stock change; check what's included before you order.

Prices change often; the button shows today's price.

Each button opens this exact model. We may earn a commission on tracked links; it never changes what we publish. Disclosure

Questions buyers ask

When does it turn on in auto?
Above about 4 in of water.
How low does manual mode drain?
To about 1/2 in.