· sump pumps · 13 min read
Best Float Switch 120V (2024): Reviews & Buying Guide
Discover the top-rated float switches 120V in 2024. Our expert reviews and buying guide help you choose the best switch for your sump pump or wastewater system.
Float switches are essential components of sump pumps, sewage pumps, and other wastewater systems. They automatically activate or deactivate the pump based on the water level, ensuring efficient and reliable operation. In this buying guide, we will review and compare the best float switch 120V options available in the market, helping you make an informed decision for your specific needs.
Overview

PROS
- Vertical float switch suitable for smaller basins and various sump pumps
- 120-volt float switch provides reliable water level detection
CONS
- May require professional installation for certain applications
The PumpSpy Sump Pump Vertical Float Switch is a 120-volt float switch designed for sump pumps and other plumbing equipment. Its vertical orientation makes it suitable for basins with limited space, making it a versatile choice for both residential and commercial applications. The float switch features a 10-foot cord, providing ample length for easy installation and positioning.
This float switch operates on a simple mechanism where the float ball rises or falls with water level changes, triggering the switch to turn the pump on or off accordingly. It is designed to provide reliable water level detection, ensuring that pumps operate efficiently and prevent flooding or water damage. Its durable construction ensures longevity and resistance to corrosion, making it a dependable solution for various pumping applications.

PROS
- Convenient tethered design for reliable pump control
- Rugged construction for durability in demanding environments
- Versatile usage in ponds, sumps, sewage systems, and more
- 15-foot cord provides ample reach for various setups
- Easy installation and maintenance for hassle-free operation
CONS
- May require additional accessories for certain applications
- Not suitable for applications with high water pressure
The Little Giant RFSN-9 115-Volt Float Switch is a reliable and adaptable solution for controlling water levels in various settings. Its tethered design ensures continuous monitoring and pump activation when water levels drop, making it ideal for applications such as ponds, sumps, sewage systems, and effluent systems. Constructed with durable materials, this float switch can withstand demanding environments and provides long-lasting performance.
With a maximum amperage of 13 amps and a 1/2 HP rating, the Little Giant RFSN-9 Float Switch can handle a wide range of pumping applications. Its versatility is further enhanced by a 15-foot cord, providing ample reach for various setups. Additionally, the easy installation and maintenance process makes it a convenient choice for both residential and commercial use. Overall, the Little Giant RFSN-9 115-Volt Float Switch offers a combination of reliability, durability, and versatility, making it an excellent investment for effective water level management.

PROS
- Effortlessly Monitors Liquid Levels: Fine-tunes septic pump activation to prevent overflows or dry runs.
- Heavy-Duty Construction: Withstands the rigors of harsh wastewater environments, ensuring longevity.
CONS
- May Require Professional Installation: Technical expertise recommended for setup to ensure optimal performance.
- 16-Foot Cable Length: Might not be sufficient for all septic tank configurations.
Sludge Boss Septic Float Switch: A Guardian of Septic System Integrity
Harnessing the power of precision engineering, the Sludge Boss Septic Float Switch emerges as an indispensable tool for septic system maintenance. Its meticulous design empowers it to accurately gauge liquid levels, triggering pump activation when necessary to avert potential overflows or dry runs. Constructed with unwavering durability, this float switch fearlessly withstands the rigors of wastewater environments, promising years of reliable service.

PROS
- Easy to install
- Durable construction
- Suitable for most sump pumps
- 120-volt
CONS
- A bit pricey
- May not be compatible with all sump pumps
The Basement Watchdog Model BWC1 Universal Replacement Sump Pump Float Switch is a high-quality, durable float switch that is easy to install. It is compatible with most sump pumps and is designed to prevent basement flooding. The float switch is made of heavy-duty plastic and has a long cord that allows it to be placed in the sump basin without having to worry about it getting tangled. The float switch also has a built-in alarm that will sound if the water level in the sump basin rises too high. The Basement Watchdog Model BWC1 Universal Replacement Sump Pump Float Switch is a great way to protect your basement from flooding. The float switch is easy to install and maintain, and it is designed to last for many years.
There are a few potential drawbacks to the Basement Watchdog Model BWC1 Universal Replacement Sump Pump Float Switch. One is that it is a bit pricey. Another is that it may not be compatible with all sump pumps. However, these drawbacks are outweighed by the float switch's durability, ease of installation, and reliability. If you are looking for a high-quality float switch that will protect your basement from flooding, the Basement Watchdog Model BWC1 Universal Replacement Sump Pump Float Switch is a great option.

PROS
- Dual float switches provide accurate and reliable liquid level detection
- Hi-lo setup enables automatic pump activation and deactivation based on water level
CONS
- Requires electrical wiring and installation by a qualified electrician
The Briidea Hi-Lo Sump Pump Controller with Dual Float Switch and Overload Protection is an essential tool for managing water levels in sumps and other liquid containment systems. Its dual float switches provide precise liquid level detection, ensuring timely and efficient pump operation. The hi-lo setup allows for automatic pump activation when the water level rises and deactivation when it drops, preventing overflows and dry running. This float switch is designed for use with 120V pumps and features overload protection for added safety.
The Briidea float switch is made from durable materials and is built to withstand the harsh conditions of sump environments. It is easy to install and can be mounted vertically or horizontally. The controller is housed in a compact and weather-resistant enclosure, making it suitable for both indoor and outdoor use. Whether you are a homeowner, contractor, or facility manager, the Briidea Hi-Lo Sump Pump Controller is a valuable addition to your sump pump system, providing peace of mind and protection against water damage.

PROS
- Automatically activates and deactivates your pump based on water level
- Prevents pump damage caused by dry running
CONS
- May not be suitable for all sump pump applications
- Requires professional installation
The PUMPMASTER 20PMD1WP 20FT 120V Float Switch with Plug is an essential component for any sump pump system. It automatically activates and deactivates your pump based on water level, preventing pump damage caused by dry running. The switch is made of durable materials and is designed to withstand the harsh conditions of a sump pump basin. It also comes with a 20-foot cord, making it easy to install in most applications.
This float switch is a great choice for both residential and commercial use. It is easy to install and maintain, and it can help to extend the life of your pump. If you are looking for a reliable and affordable float switch, the PUMPMASTER 20PMD1WP is a great option.

PROS
- Extended 25 feet cable provides ample reach for deep sumps and lift stations
- Heavy-duty construction ensures durability in demanding environments
- 120V compatibility matches common sump and sewage pumps
CONS
- Float ball may require adjustment for optimal operation
- Connections require weatherproofing to prevent moisture damage
The Superior Pump 92005 Float Switch offers a reliable solution for water level control in sump and sewage pumps. Its extended 25-foot cable provides ample reach for even the deepest sumps, ensuring effective pump activation and deactivation. Constructed with heavy-duty materials, this float switch withstands the harsh conditions of sump pits and lift stations, guaranteeing long-lasting performance.
With its compatibility with 120V pumps, it seamlessly integrates with most standard sump and sewage pumps. The float ball's adjustable design allows for customization to suit specific water level requirements. However, it may require some initial fine-tuning to achieve optimal operation. Additionally, proper weatherproofing of the electrical connections is crucial to prevent moisture damage and ensure safe operation.

PROS
- Powerful 1HP motor for efficient water removal
- Durable construction for lasting performance
- Built-in float switch for automatic operation
- Versatile use for pools, ponds, gardens, and more
CONS
- May be too powerful for smaller applications
- Requires a 120V power source
The Prostormer 120V Submersible Sump Pump is a powerful and reliable pump for removing water from pools, ponds, gardens, and other areas. With its durable construction and built-in float switch, this pump is designed to provide years of trouble-free operation.
The Prostormer sump pump is powered by a 1HP motor, which provides plenty of power to move water quickly and efficiently. The pump has a maximum flow rate of 3500 gallons per hour, making it suitable for a variety of applications. The pump is also equipped with a built-in float switch, which automatically turns the pump on when the water level rises and turns it off when the water level drops. This feature ensures that the pump will only operate when needed, saving energy and extending the life of the pump.

PROS
- Convenient side-mounted design for easy installation in tight spaces.
- Versatile compatibility with various liquids, making it suitable for a wide range of applications.
- Durable construction ensures longevity and reliability in harsh environments.
- Clear switching action provides precise liquid level detection.
CONS
- May require professional installation for specific applications.
- Float ball size and shape may limit its use in certain narrow containers.
The mxuteuk Float Switch 120V is an exceptional water level sensor designed for precise liquid level detection. Its side-mounted configuration allows for convenient installation even in confined spaces, making it ideal for aquariums, water tanks, and other liquid-level monitoring applications. The versatility of this float switch extends to its compatibility with different liquids, providing a comprehensive solution for various industries.
Constructed with durable materials, the mxuteuk Float Switch 120V ensures longevity and unwavering reliability. Its clear switching action guarantees accurate liquid level detection, eliminating any uncertainty. However, depending on the application, professional installation might be necessary for optimal performance. Additionally, the size and shape of the float ball should be considered when implementing the switch in narrow containers to ensure proper functionality.

PROS
- Normally closed design ensures safety in case of power failure
- 120VAC compatibility for direct connection to standard outlets
- Plug-and-play installation simplifies setup
- Versatile applications in sumps, tanks, and other liquid environments
CONS
- Not intended for use in potable water or corrosive liquids
- May require additional components for specific applications
This robust float switch offers reliable liquid level monitoring for a wide range of applications. Its normally closed design ensures fail-safe operation in the event of a power outage, making it an ideal choice for critical setups. Compatible with standard 120VAC outlets, installation is a breeze with its plug-and-play design. Whether you're monitoring liquid levels in sumps, tanks, or any liquid environment, this float switch delivers accurate and dependable performance.
While it excels in non-potable water and non-corrosive liquids, it's essential to note that it may require additional components for certain applications. Nonetheless, its versatility and straightforward installation make it a standout choice for anyone seeking a reliable float switch for their liquid level monitoring needs.
After reviewing and comparing the top float switches 120V, our top pick is the PumpSpy Sump Pump Vertical Float Switch for its versatility, ease of installation, and affordability. It is ideal for smaller basins and offers a 10-foot cord for added flexibility. Other highly-rated options include the Little Giant RFSN-9 and the Sludge Boss Septic Float Switch, suitable for various applications and performance requirements. When selecting a float switch 120V, consider factors such as the pump type, basin size, and desired water level control range. By choosing the right float switch, you can ensure optimal performance and longevity of your wastewater system.
Frequently Asked Questions
Is the PumpSpy Sump Pump Vertical Float Switch compatible with all types of sump pumps?
Yes, the PumpSpy Sump Pump Vertical Float Switch is compatible with most sump pumps, making it a versatile option for various applications.
What is the maximum cord length available in a float switch 120V?
Float switch 120V models typically offer cord lengths from 10 feet to 25 feet, providing flexibility during installation and ensuring the switch can reach the desired water level.
How do float switches determine the water level in a basin?
Float switches utilize a float mechanism that rises or falls with the water level. When the water reaches a predetermined level, the float triggers a switch that activates or deactivates the pump.
Can float switches 120V be used with sewage pumps?
Yes, float switches 120V are suitable for sewage pumps. Choose a model designed for use with viscous liquids and suspended solids to ensure reliable operation in wastewater treatment applications.
How often should float switches be inspected and maintained?
Regular inspection and maintenance of float switches is essential to ensure proper functioning. Inspect them for any signs of damage or wear periodically, and replace them promptly if needed.