Best Sump Pump Float Switch Reviews 2023 – Buyers Guide

If you own a house, you probably own a sump pump too. It is an important device to have, as it helps keep the basement area dry.

However, it is not the only thing you need. In order to activate your sump pump, you need to get a sump pump float switch. Without one, the other is useless.

Usually, a sump pump comes with a float switch of its own, which is great. But occasionally, a sump pump float switch may need a replacement.
What do you do then?

Well, you do not worry at all, because here are some reviews of the best sump pump float switches in 2023 for you to choose from.

The sump pump is an important device to have in your home. It is utterly useless without a sump pump float switch. The switch is one of the significant parts of a pump, and the pump will not be able to activate without it.

Best Float Switch For Sump Pump - Comparison



Editors Reviews

Check Price

Superior Pump 92010

Zoeller 004892

Parts 2O FP18-15BD-P2


LevelGuard Z24801A1Z

What is a Sump Pump Float Switch?

The float switch is a component of the sump pump that rises and falls with water levels. Depending on these movements, it is responsible for activating and deactivating the motor.

The float switch is not heavy, and it hangs loosely from the arm to allow it to rise when the basin is filled with water.

6 Best Sump Pump Float Switch Reviews

1. Superior Pump 92010 Vertical Float Switch Reviews


  • Non-mercury switch
  • 10-foot long waterproof power cord.
  • It comes with mounting gear.
  • It requires pumping up to only 120V and 10 amps
  • This item can withstand temperatures up to 140 F
  • The starting point of its currents goes as high as 90 amps.

The Superior Pump 92010 is a brilliant choice for utility and sump pumps since it functions well with almost all models. The pump does not use mercury to operate its 120volts motor. It comes with a clamp and a mounting bracket, together with a ten-foot-long power cord for easy installation.

The float switch is factory tested to ensure efficiency. It is a good choice for damaged vertical switches. It is a top-quality switch designed for all submersible and utility sump pumps.


  • It is lightweight.
  • It is easy to install


  • It can't be utilized to replace hard-wired float switches.

2. Zoeller 004892 Replacement Switch

The Zoeller switch for 50 and 90 series pumps is one of the best float switches. It is known to extend your sump pump's durability, making it a popular demand.

It is a durable and versatile sump pump float switch compatible with these models; 53, 55, 57, 97, and 98 from the 90 and 50 series. It weighs 1.6 ounces, making it lightweight, portable, and extremely easy to install.

The Zoeller float switch comes with a gasket, a seal, and two screws with brackets, making it even easier for the installation process.

The two screws and the gasket are designed to provide extra security to secure the switch inside the body. The seal is designed with abrasion-resistant rubber.


  • It is strong.
  • It is durable.
  • It is easy to install


  • It can feel a little stiff.

It is designed to withstand extreme pump cycles during torrential waterfalls. The float switch is reliable and can extend your sump pump's life up to 10 years after installation. Ultimately, it is designed to assist in domestic and commercial use.

3. Parts 2O FP18-15BD-P2 Sump Pump Float Switch Reviews

The Flotec Float switch is one of the most efficient sump pump float switches. It is designed to fit any 1 ½ and one ¼ inch of NPT, regardless of it being a male or female thread.

This float switch functions very easily with different applications such as ABS fitting, PVC fittings, and Fernco fittings, making it easy to install.

It comes with a 10-foot long cord, and it is designed for submersible pumps.

It is interchangeable with most sump pump brands. It can convert your utility pumps to automatic ones depending on your convenience.


  • It is easy to install and use
  • It is durable
  • Piggyback for easy replacement.
  • It weighs 1 pound, making it considerably lightweight.
  • It is affordable. 


  • It features a short cord length.

4. THE BASEMENT WATCHDOG Model BWC1 Sump Pump Float Switch

It is the most exclusively affordable and valuable option for a vertical float switch. It is a standard, reliable float switch that is meant for customer's satisfaction.

It has a large float designed to detect water level rise for every ¼ inch, making the automatic pump activation readily available.

Its dual feature ensures efficiency when draining water. If the primary float switch fails to activate the sump pump, the secondary float steps up to proceed with the draining. The Basement Watchdog float switch is made of a debris-proof float cage. 

Its wiring is coated to prevent it from interfering during the pump cycles and also ensures no debris is not accumulating under the float. It allows an extra ten seconds to the pump for drainage to maintain water levels. It comes with a hose clamp and a controller for easy installation.


  • It is easy to install
  • Debris-proof wiring and float cage
  • Large float
  • The secondary float steps us when the first fails to activate.


  • It does not work if stuck at the pump’s top.

5. LevelGuard Z24801A1Z Solid State Sump Pump Switch

It is one of the top sump pump float switches that suits your needs perfectly. The sump pump float check is the first float switch that lasts longer than a sump pump. It is easy to use with most utility and submersible sump pumps.

The LevelGuard switch features an electric control that maintains an automatic check on the water level. It also uses field-level sensing technology to assess water levels.

Its shell is also designed with top-quality water-resistant thermoplastic, and it takes up less space compared to other float switches. It is a time-based machine, owing to its 6.7 inches of water level control. It has a 15 feet long cord that has a piggyback for ease of replacement.


  • It is easy to install.
  • It can run up to 2 million cycles.
  • It features an electric control.
  • It takes up less space.


  • You may need to wait for up to 24 hours after installation for it to function.

6. HydroCheck Hi-Lo Pump Controller with Dual Float Switch

This sump pump controller comes with dual switches, making it efficient in functioning. It features a unique sound alarm that alerts you when the pump is not functioning, making it effective during floods.

It has a magnificently stable composition. Its parts are built quite sturdily. Its design can be used with any submersible and utility sump pumps.

The sensors are made with top-quality materials that do not require regular cleaning after interacting with debris and minerals in the water. It is capable of turning “on” or “off” from levels ½ to 20 inches. This switch will ultimately extend your sump pump’s life.


  • It is energy-efficient.
  • It is easy to install and is low maintenance.
  • It is reliable
  • It is made in the USA
  • It has a universal design.
  • t has an alarm to warn you if it’s not working.


  • It is mostly designed for indoor use only.

How to Install a Float Switch on the Sump Pump

Replacing and installing a float switch can be a little tricky, especially if you are inexperienced in plumbing. Installing a float switch can be done at home, but you can also hire a professional to help with the process. There are a couple of ways you can go about installing;

  1. 1
    Replacing the older one with the same switch type.
  2. 2
    Replacing with a different float switch kind.

You need these items for the installation process;

  • New float switch
  • Waterproof glue
  • Zip ties
  • A screwdriver
  • Concrete and silicone sealant.

Step One

Begin by emptying your sump pit. Run the pump until it is empty. After emptying the pit, disconnect the pump from the main power supply.

Step Two

Locate the float switch that you will be replacing. The float switch is attached either to the pump's side or found at the pit's bottom. Locate and remove it.

Step Three

Dismantle the float switch. After removing it from the pump, use the screwdriver to open up its casing and take note of the defective switch. Attach the new float switch and apply the waterproof glue.

Allow the glue time to dry off, after which you can reassemble the float switch parts together. If you are adding another float switch to the existing one, at this stage, you can bypass the wiring of the last switch and attach it with the new switch.

Step Four

Connect the float switch to the sump pump and ensure all the parts are properly sealed off. Return the pump to its pit. Run the pump to ensure everything is running smoothly.

What are the Benefits of a Float Switch?

There are different benefits for installing a float switch into your sump pump. Below is a comprehensive list of benefits of a float switch. 

1. Eliminates the potential for water damage.

One of the most significant benefits of a sump pump float switch is that it reduces the potential for overflow, leading to water damage to the surrounding floor or ground surfaces.

When the water reaches the required level, the float switch automatically deactivates the sump pump, eliminating excess overflow.

2. Low potential for components to fail.

Given that it is a simple switch mechanism, it is less likely for components to malfunction when compared to other more complicated devices.

3. Low Cost

Another benefit of a sump pump float switch is that it is a low-cost feature that is easy to purchase and install. If the sump pump does not come equipped, the float switch can be installed by a technician at a reasonably affordable cost.

4. It reduces most and other microbial growth.

In addition to avoiding water damage, the automatic switch-off of the sump pump will remove the potential for the growth of mold in overflowed surfaces around the unit. This leads to a healthier environment.

5. It is effective

An automatic float switch activates and deactivates on its own depending on the water level. This reduces having to manually turn the pump on and off every time the water level rises and falls. It can work automatically at any time of the day and night.

6. Longer life for the sump pump

The majority of sump pumps fail because the float switch was unable to function. While sump pump float switches can be replaced or repaired, it only happens after severe damage in the basements or crawl spaces.

An excellent durable float switch will save you from dealing with a dysfunctional pump machine and a messy basement.

What to Consider When Choosing a Sump Pump Float Switch

Below are several factors to consider when purchasing a float switch.

1. The Type of Switch

Float switches come in two different types, and each functions differently from the other.

  • Vertical float switches. This switch utilizes a rod to float up and down. The rod is mostly designed with stainless steel, whereas the float switch has an air-filled core. Vertical float switches are suitable for narrow sump pumps since they require more limited space to work and install. They are preferred for starting shorter pump cycles. It is energy efficient and uses less electricity when functioning.
  • Tethered float switch. A tethered float switch is preferred if you have a broad and deep sump pump. It does not use any rods, and it covers most of the sump pump, making it bigger. It assists in starting longer pumping cycles and uses more electricity. It is the best option for you if you are using a mighty sump pump.

2. The Size of the Switch

Different sump pumps have various sizes of float switches. Therefore, when shopping for a float switch, ensure it is compatible with the sump pump you have at home.

It should ultimately be the correct fit and size for the sump pump. If it fails to fit the pump well, expect mediocre and unsatisfying performance from the pump.

3. Ease of Installation.

If you are going to install it on your own, you should consider purchasing one that is easy to install and use. Ensure the float switch has the appropriate features that will make it easy to install.

4. The Float Switch Build

the float switch should be designed with materials that are rust and corrosion-resistant. Many sump pumps are submersible, and this means the float switch will come in constant contact with debris and minerals in the water.

Since the float switch will contact such humid conditions, it is vital to ensure the switch is waterproof. The float switch should be made with sturdy materials too to ensure durability.

5. Is the Float Switch Electronic?

The majority of float switches function electronically. You should consider a float switch that features a water level sensor technology instead of having components that work mechanically. Some switches run automatically after detecting the water levels.

6. Is the Plug Piggyback?

The main advantage of having a piggyback plug is the ability to test the sump pump independently. Your work is to disconnect the cords from the wall and ensure they stay separate. Once it is done, you connect the pump to the outlet without the switch.

7. Alarm Systems

Some sump pumps come with an alarm system to alert you when it detects a problem while pumping the water.

8. Power Cord Length

It would help if you chose a model with at least ten feet cord to allow it to reach the basin from the power outlet. Using an extension cord can be an alternative. However, it is hazardous since it can short out or cause a fire outbreak.

Who Needs a Float Switch?

Sump pumps need a float switch to function. Without the float switch, the motor does not know precisely when to activate itself when the water level rises in the sump pump. Even the most powerful pump will not function if it doesn't know how to start and deactivate itself.

Homeowners who have a sump pump should ensure they have a float switch installed on their sump pumps. They should also have replacement float switches just in case the existing ones fail to function.

FAQs About the Sump Pump Float Switch

Q: Where is the float switch located on the sump pump?

A: The float switch can be located internally or externally. It is usually adjustable to allow the perfect fit with your water line and basin.

Q: How does a float switch work?

A: The float switch functions like an arm hanging off the side of the pump’s unit with a buoy attached.

Q: Why does a float switch fail?

A: Using an extension cord often results in overheating of the sump pump. Therefore, when the power source fluctuates in providing power, the float switch, despite functioning, won't turn the pump on.

This eventually stops the float switch from functioning. Float switches also get clogged, which prevents the switch from rising up the base, making it dysfunctional.

In Conclusion

It is extremely important to make the best choice when you need a sump pump float switch replacement because, without one, you cannot make a sump pump run.

We recommend using the Superior Pump 92010 switch due to its amazing features at a reasonable price. In fact, it’s the best sump pump float switch for us.

But at the end of the day, it is up to you to make sure that you know the ins and outs of your device, and then thoroughly read every review and figure out which one works the best for you.

About the Author Seth Gold

Seth Gold is a Blogger and Writer, Writing for the last 3 years on Home improvement, DIY, Gardening, and many more things where people get the latest free product information and buying guide.

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