Best Float Sump Pumps of 2025

Harry Stack Avatar
Harry Stack
Last Updated: Jan 6, 2025

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Float sump pumps are an essential tool for any homeowner looking to prevent flooding in their home. These pumps are designed to automatically turn on when water levels reach a certain point in the sump pit, and pump the water out of the space before it can cause any damage. They are typically installed in basements or crawl spaces and can handle a variety of different types of water, including groundwater, rainwater, and sewage. With their reliable and durable construction, float sump pumps provide a cost-effective solution for keeping your home safe and dry.

At a Glance: Our Top Picks

FLUENTPOWER 1/2HP Sump Pump Cover #TOP 1
FLUENTPOWER 1/2HP Sump Pump
ftb score rating icon 9.8
POXURIO 1HP Automatic Sump Pump Cover #TOP 2
POXURIO 1HP Automatic Sump Pump
ftb score rating icon 9.7
WAYNE CDU790 1/3 HP Submersible Sump Pump Cover #TOP 3
WAYNE CDU790 1/3 HP Submersible Sump Pump
ftb score rating icon 9.5

Top 10 Float Sump Pumps

FLUENTPOWER 1/2HP Sump Pump

FSP550C
Dark Grey
1/2HP 2500GPH
FLUENTPOWER 1/2HP Sump Pump Cover
FLUENTPOWER 1/2HP Submersible Sump Pump 2500GPH Utility Water Pump, Auto/Manual Control by Integrated Float Switch, with 16.4 Ft Cord for Pool Tub Garden Pond Flooded Basement Draining

The FLUENTPOWER 1/2HP Sump Pump is a powerful and reliable submersible utility pump that can be operated automatically or manually. With a maximum flow rate of 42 gallons per minute and a maximum lifting height of 26 feet, this pump can transfer water effectively and efficiently. The upgraded sealing structure and full corrosion-resistant shell ensure longer durability and safety. The pump is easy to install and comes with three plastic adapters. It is ideal for heavy-duty draining applications including pools, ponds, pits, wells, ditches, and basements. Customers can buy with confidence as the pump comes with lifelong technical consultation, 24-hour customer service, and a one-year manufacturer's warranty.

What We Like
Can be operated automatically or manually
Powerful and reliable performance
Easy to install with three plastic adapters included
Longer durability and safety with upgraded sealing structure and full corrosion-resistant shell
Ideal for heavy-duty draining applications including pools, ponds, pits, wells, ditches, and basements
#TOP 2

POXURIO 1HP Automatic Sump Pump

POXURIO
QS-1
Blue
POXURIO 1HP Automatic Sump Pump Cover
POXURIO 1HP Sump Pump, 5000GPH Automatic Basement Sump Pump with Float Switch, 750W Submersible Utility Water Pump, 26FT Cord for Basement, Swimming Pool, Pond, Dirty Water

The POXURIO Sump Pump is a powerful tool for your drainage needs, featuring a robust 1HP motor that can handle up to 5000 gallons per hour and lift water as high as 30 feet. It includes multiple outlet sizes, so you can easily connect it to different pipe setups. The high-quality sealing structure ensures durability and resistance to corrosion, providing you with reliable performance. Plus, the automatic float switch allows for effortless operation, turning the pump on or off as needed, making your water removal tasks much simpler.

What We Like
Powerful 1HP motor
Multiple outlet sizes
Durable sealing structure
Automatic float switch

WAYNE CDU790 1/3 HP Submersible Sump Pump

Wayne
CDU790
Black
1/3 HP
WAYNE CDU790 1/3 HP Submersible Sump Pump Cover
WAYNE CDU790 - 1/3 HP Submersible Cast Iron and Stainless Steel Sump Pump with Integrated Vertical Float Switch - Up to 4,600 Gallons Per Hour - Heavy Duty Basement Sump Pump, Black

This 1/3 HP submersible sump pump is perfect for keeping your basement dry during heavy water flow. Its tough and durable design ensures long-lasting use, and the top suction design minimizes clogging. The vertical float switch has been tested for long-lasting use, up to 10 times more than competitors, and the pump is easy to install. With a 1-1/2” NPT discharge, this pump is compliant with building codes.

What We Like
Durable and long-lasting
Efficient top suction design
Easy to install in 15 minutes with no need to drill
#TOP 4

Superior Pump 92341 1/3 HP Cast Iron Submersible Sump Pump

92341
Black
1/3 HP
Superior Pump 92341 1/3 HP Cast Iron Submersible Sump Pump Cover
Superior Pump 92341 1/3 HP Cast Iron Submersible Sump Pump with Vertical Float Switch

The Superior Pump 92341 is a sump pump with 1/3 HP motor that can move up to 2,760 gallons per hour and lift water up to 25' of vertical height. It features rugged cast iron construction, a 10-foot cord length, a vertical float switch for automatic on/off operation, and a 1-1/2 inch NPT discharge for high capacity pumping. This pump is built to last with quality components and factory tested for reliability.

What We Like
Powerful motor can move up to 2,760 gallons per hour and lift water up to 25' of vertical height
Automatic on/off operation with vertical float switch
Rugged cast iron construction ensures durability
#TOP 5

Green Expert 1HP Sump Pump

203636FBA
Green and Grey
Green Expert 1HP Sump Pump Cover
Green Expert 1HP Sump Pump 4000GPH High Flow Stable Built-in Float Switch 25FT Power Cord Automatic On Off for Water Removal Easy to Drain Sewage Pool Hot Tub Flooded House Garden Basement Sink

The Green Expert Sump Pump is designed for efficient water removal with its powerful 1.0HP motor, capable of lifting water up to 26 feet and pumping 4000 gallons per hour. You can easily switch between manual and automatic modes, allowing you to control water levels precisely. The adjustable start water depth feature ensures the pump activates at your desired level, providing flexibility for various situations. Its portable design, with a 25-foot power cord, makes it simple to set up and use in flooded areas, basements, or pools, offering you convenience and reliability.

What We Like
High pumping capacity
Manual/automatic operation
Adjustable start depth
Portable design
#TOP 6

Green Expert 1/4HP Submersible Pump

203611FBA
Green and Gray
Green Expert 1/4HP Submersible Pump Cover
Green Expert 1/4HP Submersible Sump Pump Built-in Float Switch Manual Automatic Flow 2000GPH 25-Foot Power Cord for Easy Water Removal Portable Utility Pump for Pool backyard Flooded Basement draining

The Green Expert Sump Pump is designed for efficient water removal in various situations. Its oil-free motor delivers reliable power, moving up to 2,000 gallons per hour, making it ideal for flooded basements or pools. You can choose between manual and automatic operation, allowing you to adapt to your specific needs easily. The built-in float switch is designed to avoid debris entanglement, ensuring stable performance. With a convenient 25-foot power cord, you can set it up from a distance, making it perfect for hard-to-reach areas.

What We Like
High water removal capacity
Manual and automatic operation
Debris-resistant float switch
Long power cord for flexibility
#TOP 7

Wayne CDU980E 3/4 HP Sump Pump

Wayne
58321-WYN3
Silver
Large
Wayne CDU980E 3/4 HP Sump Pump Cover
Wayne 58321-WYN3 CDU980E 3/4 HP Submersible Cast Iron and Stainless Steel Sump Pump with Integrated Vertical Float Switch, Large, Silver

The Wayne Sump Pump CDU980E is designed for indoor use, making it ideal for keeping your basement dry during heavy rainfall or snowmelt. With its powerful 3/4 HP motor, it can pump an impressive 5,490 gallons per hour, ensuring your space stays free of water. Its robust construction features corrosion-resistant stainless steel and cast iron, providing durability for long-term use. The smart top suction design prevents clogging and air lock, while the easy installation process takes just about 15 minutes, allowing you to quickly safeguard your home from water damage.

What We Like
High pumping capacity
Durable materials
Easy installation
Top suction design
#TOP 8

Prostormer 3500 GPH 1HP Submersible Water Pump

PSWP03D
Orange
Prostormer 3500 GPH 1HP Submersible Water Pump Cover
Sump Pump, Prostormer 3500 GPH 1HP Submersible Clean/Dirty Water Pump with Build-in Float Switch for Pool, Pond, Garden, Flooded Cellar and Irrigation

Prostormer Water Pump is a powerful and efficient tool designed to tackle any draining job at a fraction of the time. With 1HP high power, it is more efficient than ordinary 3/4HP sump pump. It comes with 3 different diameters outlets to adapt to different size hoses as needed according to the flow rate. The bigger the flow is, the wider the outlet should be. The pump has two modes, manual and automated. In manual mode, it can carry out pumping even if the remaining water level is reached and the pump runs dry. In automated mode, it will switch on automatically when the water exceeds the start-level and switch off when the stop-level has been obtained. The sump pump features a durable sealing structure and a thermoplastic body that keeps the pump from corrosion. Its higher base plate also assures the prevention of debris collection in the sump pit.

What We Like
1HP high power
Multi outlet sizes
Manual and automated modes
Durable sealing structure
Prevention of debris collection
#TOP 9

Lanchez 1.6HP Water Sump Pump

Q1100B56-L
Silver
Lanchez 1.6HP Water Sump Pump Cover
Lanchez 1.6 HP Stainless Steel Sump Pump Submersible with Automatic Float Switch, 5500GPH Clean/Dirty Transfer Water Pump with 25FT Cord for Swimming Pool Garden Basement Tub Pond Draining

The Lanchez 1.6HP Pump is a powerful and efficient submersible water pump that can handle any draining job with ease. Its 1.6HP high performance PSC copper motor ensures great flow while being energy efficient and quiet. With the ability to lift water up to 29' of vertical height and move up to 5,177 gallons per hour, this pump can tackle even the toughest water removal tasks in a fraction of the time. The pump comes with a variety of adapters for easy installation and its full stainless steel casing ensures corrosion resistance and better cooling. The automatic float switch allows for convenient operation, automatically starting the pump when the water level rises and disconnecting power when the pump can no longer pump water. With its wide application range and customer-first approach, the Lanchez 1.6HP Pump is a reliable choice for draining water in various scenarios.

What We Like
Powerful
Easy installation
Corrosion-resistant
#TOP 10

Superior Pump 92250 1/4-HP Submersible Sump Pump

92250
Black
1/4 HP
Superior Pump 92250 1/4-HP Submersible Sump Pump Cover
Superior Pump 92250 1/4-HP Thermoplastic Submersible Sump Pump with Tethered Float Switch

The Superior Pump 92250 1/4-HP Submersible Sump Pump is a reliable and efficient solution for removing water from your basement or crawl space. With a 1/4 HP motor, this pump can move up to 1,800 gallons per hour and lift water up to 25 feet of vertical height. Its tough thermoplastic construction and 10-foot cord length make it durable and easy to use. The tethered float switch automatically turns the pump on and off, while the 1-1/4 inch or 1-1/2 inch NPT discharge allows for high-capacity pumping. Superior Pumps are Built to Last, engineered with quality components and are 100% factory tested.

What We Like
Efficiently moves up to 1,800 gallons per hour
Durable and long-lasting thermoplastic construction
Tethered float switch for automatic on/off operation
Buying Guide Image

Frequently Asked Questions (FAQs)

1. What is a float on a sump pump?

A sump pump float switch acts as a level sensor to alert your pump to rising water levels in a sump pit. As the water level rises to a certain point, a pump's float switch will open a circuit which allows the pump to begin pumping water up and out of the basement.

2. Where should the float be in a sump pump?

The Float Switch should hang a few inches above the top of your sump pump motor. The exact height will vary depending on the size of your sump pit and the power of your sump pump motor.

3. Can you add a float switch to a sump pump?

Installing a new float level switch will turn a regular sump pump into an automatic one. You simply need to use a float level sensor with two switch points (High and Low) such as the FLE series, and a powered pump relay such as the inexpensive RCU-7000.

4. How does a sump float work?

A sump pump float switch detects flooding in the sump; it's what turns your sump pump on and off in response to the amount of water in the sump pit. The device relies on a round float ball to measure liquid level, like a beach ball that floats on top of the water. When the water rises, the float rises with it.

Editor's Notes

During our float sump pump research, we found 24 float sump pump products and shortlisted 10 quality products. We collected and analyzed 57,552 customer reviews through our big data system to write the float sump pumps list. We found that most customers choose float sump pumps with an average price of $75.84.

The float sump pumps are available for purchase. We have researched hundreds of brands and picked the top brands of float sump pumps, including FLUENTPOWER, POXURIO, Wayne, Superior Pump, G green EXPERT. The seller of top 1 product has received honest feedback from 83 consumers with an average rating of 4.8.

Written by
Harry Stack Avatar

Harry Stack owns a small hardware store, his career landed him a depth of knowledge in categories such as tools, equipment, machinery and hardware. In his spare time, he usually repairs furniture, safes and appliances, and he knows how to make simple repairs to plumbing or electrical fixtures. His hobbies also include woodworking and fishing.