Top 10 Best float switch in 2026

Last Updated - 6/9/2026

🏆Best Choice

PumpSpy

PumpSpy Sump Pump Tethered Universal Float Switch Replacement with Piggyback Plug for Sewage, Reliable Water Level Performance - 10 foot cord

9.8

ChoiceComparer.com Score

9.8

/ 10

Outstanding

Main highlights

•HIGH-PERFORMANCE FLOAT SWITCH: Designed for maximum dependability, PumpSpy's Tether Float Switch is made of gold-plated electrical connections that are resistant to accelerated pitting and wear. It detects changes in the water level and activates its automatic on/off function. 10 Amps @ 120VAC - Normally Open.
•WIDE APPLICATION: This portable tool is a versatile float switch used with sump, sewage, or effluent pumps. It is intended for installation on the sump pump discharge pipe and helps provide a dependable and practical solution for automating your pump system.
•UNIVERSAL REPLACEMENT: Have a replacement float switch ready when you need it the most! This universal replacement float switch will automatically activate your water pump. The float switch has a modular design and a 10-foot cord providing plenty of flexibility, while the piggyback plug helps to create a universal connection.
•EASY INSTALLATION: Our Tether Float Switch for a sump pump comes with everything you need for a quick installation. It includes a hose clamp and a cable grip for easy adjustment. This switch is simple to install by attaching the hose clamp to the pump's discharge line. Once connected to the discharge line, the pump's power cord plugs into the piggyback plug, which is then connected to any 120V outlet.
•PUMPSPY PROMISE: PumpSpy products are proudly assembled in Kalamazoo, Michigan. We employ patented, proprietary technology to help with your sump pump 24 hours a day, seven days a week. We are committed to consistently enhancing our goods, delivering quality and dependability, and providing our customers with peace of mind.

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$32.99

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Sump Alarm

Float Switch for Sump Pump - 10-Foot Water Level Sensor with Honeywell Microswitch and Adjustable Tether Length for Ground Water Bilge Pump and Water Tank – Non-Corrosive PP Casing, Rated to 13 Amps

9.7

ChoiceComparer.com Score

9.7

/ 10

Outstanding

Main highlights

•CONTROL WATER FLOW into and out of tanks and valves with a sump pump float switch by Water Boss. This float level switch helps reduce overflow potential of light to medium amounts of suspended solids.
•HONEYWELL MICRO SWITCH ensures a high-precision sump pump switch with accurate repeatability and extended life. This water sensing switch is rated up to 13 amps or 1/2 HP and has CE and IEC approvals.
•NON-CORROSIVE CASING of the Water Boss Float for water tanks and bilge pumps is IP68 rated. Rugged polypropylene construction also makes this water level switch temperature-resistant from 32°F to 140°F.
•ADJUSTABLE TETHER of its 10-foot PVC jacketed cable makes our automatic bilge switch suitable for an array of applications. Eliminate complex automation with this sump pump replacement float switch.
•5-YEAR WARRANTY against manufacturer defects lets you select the Water Boss Sump Pump Float Switch Replacement with confidence. This reliable float switch yields big savings in flood repair costs.

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$24.99

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Little Giant

Little Giant RFSN-6 115-Volt, Maximum 13-Amp - 1/2 HP, Pump Down Piggyback Tethered Float Switch for Pond, Sump, Sewage or Effluent Systems, 10-Ft. Cord, Grey, 599118

9.5

ChoiceComparer.com Score

9.5

/ 10

Outstanding

Main highlights

•APPLICATIONS: water resistant pump down tethered float switch for sump, sewage, effluent systems, ponds or utility pumps; allows pumps to start/stop automatically; adjustable
•LIMITATIONS: maximum 0.5 HP, 13 Amp maximum pump run current; 85 Amp maximum pump start current; use only with pumps equipped with integral thermal overload protection
•CORD LENGTH: 10-foot cord with piggyback plug; pumping range 7 inches to 33 inches
•TEMPERATURE RATING: maximum liquid temperature 140 degrees F
•LISTINGS: UR, CSA listed in the USA; Made in USA

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$41.95

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THE BASEMENT WATCHDOG

THE BASEMENT WATCHDOG Universal Replacement Sump Pump Float Switch (Model BWC1)

9.4

ChoiceComparer.com Score

9.4

/ 10

Excellent

Main highlights

•Compatible with most sump pumps
•Large floats detect ¼-inch water level rises, automatically activating the sump pump
•Second float provides a fail-safe to ensure pump activates
•Protective float switch cage helps keep debris and wires from interfering with float movement; vented, curved bottom reduces debris buildup under the float
•Allows the sump pump to run for an additional 10 seconds to drain excess water from the sump pit

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$44.98

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MARSTEK

Universal Tethered Float Switch with 10ft Cable - Ideal for Sump Pumps, Water Tanks, Sewage Pools, and More - 16 Amp Maximum Pump Run Current, IP68 Waterproof

9.2

ChoiceComparer.com Score

9.2

/ 10

Excellent

Main highlights

•【Premium Materials - UL Certified SJEOW Cable】: Our Sump Pumps float switch is crafted to endure the harshest conditions. What sets it apart is the SJEOW-standard cable that comes into contact with the water. This cable, UL certified for safety and performance, has a maximum service temperature of 140°F. It guarantees exceptional durability, making it ideal for applications in both clean water and challenging sewage environments.
•【IP68 Waterproof】: Designed to perform flawlessly underwater, our sewage pump tether float switch boasts an IP68 waterproof rating. It operates reliably regardless of weather conditions, making it suitable for a wide range of applications.
•【Easy Installation】: Say goodbye to complex wiring. Our sewage pump float switch is designed for convenience. Simply plug it into the piggyback plug and secure it in place with nylon ties. Adjust its position as needed for hassle-free installation.
•【Simple and Durable】: Unlike electronic float switches, our mechanical tethered float switch has a straightforward design with no complex circuits. It's easy to operate, less prone to damage, and has an extended service life.
•【Versatile Application】: With a generous 10-foot long cable, this float switch is adaptable to various settings. It's suitable for basements, large water tanks, sewage systems, pools, and ponds. It's compatible with pumps operating at currents of less than 16Amp, making it a versatile solution for water level control.

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$18.99

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FLUENTPOWER

FLUENTPOWER Sump Pump Vertical Mechanical Float Switch, Universal Float Switch Replacement with 120V Plug for Sump and Sewage Pump, Smaller Basins, Pumps & Plumbing Equipment, with 10' Cord, Black

9.1

ChoiceComparer.com Score

9.1

/ 10

Excellent

Main highlights

•VERTICAL MECHANICAL FLOAT SWITCH: Comes with a 10' power cord with a piggyback plug, mounting bracket for pump or pipe, stainless steel hose clamp, and two screws
•UNIVERSAL PUMP REPLACEMEN: Suitable for sump pumps, sewage pumps, utility pumps, and effluent applications. It's compatible to FLUENTPOWER Sewage Effluent Pump (‎FSP65035DWB)
•AUTOMATIC OPERATION: Converts manual pumps into automatically turns on and off. When float switches are fully functional, no manual activation is required, and water is pumped out of the sump pit completely hands-free
•EASY INSTALLATION: This vertical float switch kit comes completely assembled and ready to mount on the pump discharge pipe. 10-foot cord with piggyback plug; pump plugs directly into switch plug - no wiring needed
•WIDE RANGE: Pumping range from 5.8" down to 0.75". 120-volt maximum pump running current is 10 Amps

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$33.99

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OELFFOW

OELFFOW Sump Pump Universal Tethered Float Switch AC 15A 110~250V Piggyback Style Plug with 10 Feet Cord, Used in Sewage Pump, Water Tank, Septic Tank Pump, etc.

8.9

ChoiceComparer.com Score

8.9

/ 10

Great

Main highlights

•【High-Performance Design】: Utilizing high-quality float balls, ensuring stable and responsive switch triggering even in fluctuating water levels. Suitable for a variety of applications, including water pumps, water tanks, and septic tank pumps.
•【Universal Compatibility】: Featuring a versatile design, compatible with AC 15A 110~250V for various water pumping devices. The unique piggyback style plug design facilitates convenient and quick installation and replacement.
•【Waterproof and Durable】: The housing is designed to be waterproof, ensuring stable operation over extended periods in humid environments. The robust structure guarantees product durability, extending its overall lifespan.
•【Wide Range of Applications】: Not limited to sewage pumps, it can also be used for water tanks, septic tank pumps, and various other scenarios. An ideal choice for water level control in both home and industrial environments.
•【Easy Installation and Maintenance】: Carefully engineered structure for effortless installation and maintenance. Users, without the need for specialized skills, can easily complete both installation and routine maintenance, reducing overall usage costs.

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$19.99

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Sump Alarm

Premium Sump Pump Float Switch | Universal 10-Ft Tether with Piggyback Plug | Heavy-Duty for Grinder, Septic & Sewage Pumps | Rated for 1M Cycles | IP68 Waterproof

8.8

ChoiceComparer.com Score

8.8

/ 10

Great

Main highlights

•AUTOMATE SUMP PUMP CONTROL: The Piggyback Float Switch provides reliable water level management for sump pumps, wastewater tanks, and septic systems—no need for a stem-mounted float.
•UNIVERSAL COMPATIBILITY: Works with most sump pumps and motors up to 1/2 HP or 13 amps (120v AC). Perfect for non-continuous operations, ensuring your pump activates and deactivates automatically as needed.
•ADJUSTABLE TETHER LENGTH: Designed for use in light to medium suspended solids applications, this float switch offers easy adjustment to suit various water levels, preventing pump burn-out by automatically shutting off when water levels are too low.
•BUILT TO LAST: Crafted from non-corrosive polypropylene with a self-lubricating armature, this rugged float switch includes a microswitch rated for over 1 million cycles for long-lasting performance. CE and IEC approved for safety and durability.
•EASY INSTALLATION & LONG-TERM RELIABILITY: Quick setup with a piggyback plug for direct connection, ensuring hassle-free installation. Built to last with premium materials for dependable performance over time.

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$31.99

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Sump Alarm

Sludge Boss Septic Float Switch, Heavy-Duty Sewage Pump Switch for Viscous Liquids and Suspended Solids in Wastewater, Mercury-Free Self-Orienting Tank Float for Septic Pumps to 1/2 HP (20 Ft Cable)

8.6

ChoiceComparer.com Score

8.6

/ 10

Good

Main highlights

•The Sludgeboss float switch is rated to directly control motors of up to ½ Horsepower (or 13 Amps) at 120 or 220 Volts AC for non-continuous pump operations, and up to 13 Amps for 12V DC motor loads. MANAGE WASTEWATER LEVELS with Sludge Boss Septic Tank Floats. These float switches work with your sewage pump to detect the levels of viscous liquids and suspended solids in tanks and containers.
•RUGGEDLY CONSTRUCTED of non-corrosive polypropylene and PVC-jacketed wires, IP68-rated Sludge Boss Sewage Pump Switch Floats withstand non-combustible fluids in temperatures from 32°F to 140°F.
•SELF-ORIENTING DESIGN makes installation hassle-free with no tether or cable weight needed. Available in 16-, 20-, 33- and 100-foot lengths, Sludge Boss is compatible with many sewage pump systems.
•HONEYWELL MICRO SWITCH built into Sludge Boss Sewer Pump Tank Floats is rated for 1,000,000 operations. Confidently control effluent and wastewater levels in large water tanks, reservoirs, and sumps.
•MERCURY-FREE and IEC and CE rated Sludge Boss Hold Tank Float Switches are non-toxic and environmentally friendly. They are suitable for use with septic tank pumps up to 1/2 HP at 120 volts or 220 volts.

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$83.99

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HQRP

HQRP Pedestal Sump Pump Float Switch Compatible with Superior Pump 99100, Everbilt, Wayne, Craftsman, Home Depot QKS5-05, UL Listed

8.5

ChoiceComparer.com Score

8.5

/ 10

Good

Main highlights

•HQRP® Pedestal Sump Pump Float Switch;
•UL Listed; Rated Current: 15A 125V; 8A 250V;
•Universal Design Replaces Most External Pedestal Pump Float Switches;
•Durable Metal Switch Arm;
•200 Days Warranty!
•HQRP Pedestal Sump Pump Float Switch helps ensure automatic water level control for your basement or crawlspace. Designed to activate your pump when water levels rise, this vertical float switch offers dependable, consistent performance. A smart replacement for worn or malfunctioning float switches. Durable, easy to install, and efficient;
•Compatible with Superior Pump 99100, Everbilt, Wayne, Craftsman, and models using float switches similar to QKS5-05. Ideal for use with pedestal-style sump pumps found in residential and light commercial applications. Please check your pump's specifications and float switch type before purchasing for best fit;
•Great for basement sump pump systems, crawlspace drainage, or utility water removal. Whether replacing a failed switch or upgrading an older setup, this float switch provides stable, responsive control. Works with pumps commonly sold at Home Depot, Lowe’s, and other hardware stores. Keep your sump system running safely and efficiently;

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$14.95

$16.91

-12%

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