Swamp Cooler Float Valve

5 Best Swamp Cooler Float Valve to Avoid Water Damages 2024

Last Updated on May 23, 2023

Float valves are a crucial part of swamp coolers, but they’re tricky to keep at the right level. The cooler will leak if there’s too much water in it, and you’ll lose money. Imagine being in hot weather with a broken swamp cooler. It’s just a horrible experience.

Wouldn’t it be great if there was a product that could help you with this?

The best swamp cooler float valve that uses various plumbing sectors to keep water at the correct level. Easy to install and great for any cooling system that uses water. You only need to find the right product and install it in your swamp cooler.

We’ll give you a breakdown of the top five float valves for swamp coolers to help you decide. To make your purchase more accessible, we also provide additional information. Let’s begin.

EZ-FLO Evaporative Cooler Float Valve Assembly

Exterior Finish: Brass
Number of Items: 1
Valve Shape: Square
DimensionsLxWxH: 12.2 x 3.5 x 1.4 inches

LASCO Swamp Cooler Float Valve

Exterior Finish: Brass
Number of Items: 1
Valve Shape: Rectangular
DimensionsLxWxH: 1.3 x 2.5 x 11.5 inches

Dial 3/8 Bronze Float Valve Kit

Exterior Finish: Brass
Number of Items: 1
Valve Shape: Square
DimensionsLxWxH: 12 x 1.9 x 3.3 inches

What Is the Best Evaporative Cooler Float Valve?

Float valve correct water level

An evaporative cooler float valve is a device that regulates the water level in an evaporative cooler. It consists of a float connected to a lever or switch, which controls water flow into the cooler.

Most coolers have a plastic or metal float and a lever or switch on the side. The primary function of a cooler float valve is to maintain a constant water level in the cooler, regardless of how much water is being evaporated.

This helps to prevent the cooler from overheating and damaging the pump or other components. A float valve can also help regulate water flow into an evaporative cooler, ensuring enough water is available for evaporation.

There is also an automatic shut-on/off feature on the following swamp cooler that meets the above criteria:

EZ-FLO Evaporative Cooler Float Valve Assembly

EZ-FLO Evaporative Cooler Float Valve Assembly

The EZ-FLO evaporative cooler float valve assembly includes a float valve, float arm, and retainer clip. It is made of brass for durability and has a compression-type connection. The plastic float session inlet is 1/4″ OD.

This evaporative cooler float valve assembly also includes a rod to ensure a constant water level. It will help keep your cooler working correctly and prevent damage to the unit.

How Can This Product Help You?

This simple float valve is durable plastic and designed to last for a long time. Its float arm attaches to the float valve and allows it to move up and down with the water level in the swamp cooler.

The retainer clip holds it in place to prevent the float arm from moving up or down. It is designed to fit seamlessly into your existing evaporative cooler system and provide you with years of dependable service.

Good things:

  • All brass construction
  • No leaks or issues so far
  • It fits standard 3/4″ pipe fittings
  • Compression type connection


  • Susceptible to clogging, and it is difficult to clean

This evaporative cooler float valve is an excellent choice for those who want a durable and reliable product. It is constructed from all brass, so it is built to last.

How Do You Identify a 1/4 In. Evaporative Cooler Brass Float Valve?

Water float valve

You can identify a 1/4-inch brass evaporative cooler float valve by looking for a few specific features.

First, the valve should have a 1/4-inch female NPT inlet and outlet. Second, it should have a floating ball attached to the valve stem. As a final note, brass valves are recommended.

This material is durable material resistant to corrosion, making it ideal for evaporative coolers. If you find a valve that meets all of these criteria, you can be sure that it’s the float valve you are looking for. As an example:

LASCO Swamp Cooler Float Valve

LASCO Swamp Cooler Float Valve

Keeping your evaporative cooler in top condition is easy with the LASCO swamp cooler float valve. A 1/4-inch compression fitting ensures a secure connection, and the valve is made of brass and plastic for a strong and durable construction.

It is ideally suited to evaporative cooler applications as an economic model. If you install the LASCO 05-1053 water float valve, your cooler will last a long time.

How Can This Product Help You?

The LASCO 05-1053 is a well-crafted piece of hardware designed for anyone needing an adjustable shut-off valve. Its body is brass, which will withstand years of use, while the Viton seal provides a tight grip that won’t let any cooler water escape.

Its most notable feature is the Teflon disc which prevents sticking and ensures the valve closes properly every time. If you’re interested in saving swamp cooler water or preventing flooding, the LASCO 05-1053 is a wise choice.

Good things:

  • Replacement part for evaporative cooler
  • Can be used on RO water storage tank
  • Great replacement for a rooftop swamp cooler
  • Can be used on saltwater fish tank


  • The Fiat-valve assembly can rust after a long

While this float valve works great for swamp coolers, it can also be used in other applications. For those who want a rust-proof valve, it is a great choice.

Is There A 3/8 Swamp Cooler Float Valve?

Water supply float valve

Yes. There are a few manufacturers that offer a 3/8-inch float valve. This size is not as standard as the 1/4-inch or 1/2-inch valves, but it is available if needed.

3/8 float valves are devices installed to regulate the level of water that is allowed to enter the cooling system. The valve is placed above the water line and is usually made of brass or another corrosion-resistant material.

When the water level drops, the valve opens once it reaches this level again. After the water level rises, the float closes, preventing water from entering.

Dial 3/8 Bronze Float Valve Kit

Dial 38 Bronze Float Valve Kit

The Dial 3/8 bronze float valve kit is an excellent addition to your plumbing system. It is made of high-quality materials and features a brass plunger and a polypropylene float. 

It also has a 2-piece arm with an adjustable screw, making it easy to install and use. This valve is sure to provide you with years of trouble-free use.

How Can This Product Help You?

If you’re looking for an easy way to control the swamp cooler water level in your tank or reservoir, the Dial 4164 float valve is a reliable option.

The kit comes with a float valve, gauge, line, fittings, and instructions, so you can easily install it and get it up and running.

Once installed, you can adjust the cooler water level to your desired height, making it easy to keep your plants healthy and hydrated. And because the float valve is made of bronze, you can be confident that it will stand up to years of heavy use.

Good things:

  • You can easily install it yourself
  • The valve is precision engineered
  • The flow rate is consistent and accurate
  • Installs and uses easily


  • Probably not suitable for freezing weather

You’ll love this Dial 3/8 float valve kit for its easy installation and consistent flow rate. Plus, the bronze construction ensures that it will withstand years of heavy use.

Why Do You Need a 3/4 Inch Evaporative Cooler Float Valve?

Simple float valve

Float valves are essential to any evaporative cooler, and the 3/4 inch float valve is no exception. This valve is responsible for regulating the flow of water into the cooler, and it is designed to open and close automatically to maintain a consistent water level.

The float valves are available in a variety of sizes, but the 3/4 inch size is ideal for most evaporative coolers. Also, the 3/4 inch cooler float valve prevents overfilling, which can damage the cooler and cause problems cooling.

When you need a float valve for your evaporative cooler, the following two products may be just what you’re looking for.

1. MACGOAL 3/4 Float Valve for Water Tank

MACGOAL 34 Float Valve for Water Tank

You can regulate the level of water in your swamp cooler with the MACGOAL 3/4 float valve for a water tank. This product is made from high-quality engineering plastic ABS and PE, so it is durable and will last a long time.

This kit is tight with a rubber washer, while debris is kept out with a screen in the inlet. With a 3/4″ thread, installing and adjusting the water level is straightforward. This float valve ensures that your cooler always has enough water.

How Can This Product Help You?

MACGOAL B08S356MYR float valves are made of a durable, rugged material that can withstand heavy use and are easy to turn. With a 3/4″ thread size, the valve fits most tanks, making it a versatile option for many applications.

Also, the valve can automatically cut off water flow when cooler water levels reach a certain point, making it ideal for preventing flooding and overwatering. So many great features make the MACGOAL 3/4 float valve a popular choice.

Good things:

  • The rubber washer creates a tight seal
  • Installation and adjustment are quick and easy
  • The product has a wide range of uses
  • It prevents water from overflowing


  • This valve isn’t for hot water

2. Watts Evaporative Cooler Float Valve

Watts Evaporative Cooler Float Valve

The Watts evaporative cooler float valve is essential to any swamp cooler. This float valve helps to ensure even cooling and prevents overflow release.

A machined in-seat design eliminates the possibility of leakage, and you can customize the brass arm to suit your needs.

Its Buna-N seals offer a long-lasting seal, while the polyethylene float is durable. The STD-CA 3/4 swamp cooler float switch provides a great option if you want to improve the efficiency of your cooler or simply replace a worn-out part.

How Can This Product Help You?

The Watts swamp cooler float valve is a must-have for any evaporative cooler. It helps to prevent overfilling of the cooler’s reservoir and automatically shuts off the water flow when the reservoir is full.

This prevents wasted water and helps to conserve water. The valve is easy to install. You don’t need to use any tools to install them, and they are constructed with lead-free materials. It’s a very effective way to reduce waste and save water.

Good things:

  • Plumbing and flow control solutions
  • Durable, corrosion-resistant construction
  • Reduces waste and conserves water
  • Designed to withstand the rigors of daily use


  • A little bit pricey due to its heavy functions
  • Check and clean the float valve’s orifice after a while

These are just some ways a swamp cooler float valve can be beneficial. You need a float valve to save water or make your cooler more efficient. When selecting a float valve, choose one that is durable and easy to install.

Chart Comparing the Best Swamp Cooler Floats

ProductExterior FinishNumber of ItemsValve ShapeDimensionsLxWxH
EZ-FLO 20289Brass1Square12.2 x 3.5 x 1.4 inches
LASCO ‎05-1053Brass1Rectangular1.3 x 2.5 x 11.5 inches
Dial 4164Brass1Square12 x 1.9 x 3.3 inches
MACGOAL B08S356MYRAbs, Plastic, Rubber2Round‎12.24 x 9.06 x 3.7 inches
Watts STD-CABronze1Square2.37 x 3.37 x 6.95 inches

How to Choose the Best Swamp Cooler Float Valve?

Cooler float valve

Swamp coolers do not just require a float valve to work. They need the best one. Without a good float valve, swamp coolers cannot function properly. There are a few things you should take into account when choosing a float valve.

Material of the Valve

The most crucial factor is the material the valve is made from. The three most common materials are brass, bronze, and plastic. Each has its advantages.

For example, brass is more durable than plastic but is also more expensive. Bronze is more corrosion-resistant than brass but can be challenging to find. Plastic is the most affordable option, but it is not as durable.

Once you have decided on a material, you can begin to narrow down your options and find the appropriate valve for your unit.

Size of the Valve

The right size valve will ensure that your swamp cooler will be working properly and efficiently. There are a few different ways to determine the size of the valve you need.

One is to measure the opening of the cooler itself. Another is to measure the diameter of the supply line. Once you have these measurements, you can consult a chart to find the appropriate valve size.

It’s always a good idea to choose a slightly larger valve than you need, as this will prevent any potential problems in the future.

Consistent Water Leveling

Float valve position

A valve’s flow rate is determined by the cooler’s size, so choose one that can provide enough flow for the entire system.

The type of water source will also affect the flow rate, and choosing a valve compatible with the pump is essential.

Depending on the desired level of control, the valve will have to be turned more or less often to achieve it.

To determine the valve’s flow rate, you will need to know the gallons per minute (GPM) and the size of the orifice. You can find this information in the product’s specifications.

Rust and Corrosion-Resistant

The following are some things you can look for when you’re trying to find a rust and corrosion-resistant valve for your cooler.

First, check to see if the valve is made of stainless steel. This material is resistant to both rust and corrosion, so it’s a good choice for valves that will be exposed to moisture.

Second, look for valves that have a powder-coated brass finish. This type of finish helps to protect the valve from corrosion, and it also makes it easier to clean.

Finally, consider the environment in which the valve will be used. If it is exposed to salt water or other harsh chemicals, look for a valve specifically designed to resist corrosion in these environments.

Float Valve Shape

The three most common shapes of valves used in swamp coolers are round, rectangular, and square. Each one of these shapes has its own set of advantages and disadvantages.

Round valves are the most common type of valve used in swamp coolers. They are easy to install and provide a good seal.

Rectangular valves are less common but offer some advantages over round valves. They are easier to remove if they become stuck, and they provide a better seal. Installation can be challenging.

Square valves are the least common kind of valve used in coolers. They are also easy to install and offer the highest quality seal. When they get stuck, they’re the hardest to get out of.

Includes All Fittings

When looking for a new float valve for your swamp cooler, ensure it comes with all the fittings you need, like O-rings, gauge, supply line, housing nut, and valve.

These fittings help to create a tight seal and prevent water leaks. They also make installation more accessible, as you won’t need to go out and find the right size fittings separately.

Check the product’s specifications to ensure that it includes all the fittings you need before making your purchase.

By following these tips, you can be sure to find the best swamp cooler floats valve for your needs. You can keep your cooler functioning properly for years with the correct valve.

How Does a Swamp Cooler Float Work?

How Does a Swamp Cooler Float Work

A swamp cooler, also known as an evaporative cooler, is an air conditioner that uses evaporation to cool the air. The cooling process works by drawing in hot, dry air and passing it over a wet pad. As the air passes over the pad, several gallons evaporate from the pad, cooling the air.

In swamp coolers, the float sits inside at the bottom. As water gathers in the bottom of the cooler, the float rises, stopping the water supply valve at a particular area. Evaporative pads line the inside of swamp coolers. The pads are soaked with water from the float.

A fan blows air across the wet pads, causing evaporation. As the water evaporates, it draws heat from the air, cooling it. This cooled air is then blown into the room or home, providing a refreshing and natural way to cool down on hot summer days.

Why Is My Swamp Cooler Leaking Water When Off?

Why Is My Swamp Cooler Leaking Water When Off

Your swamp cooler may leak water because it was not stored properly during the winter. Most people don’t realize you must drain, remove the pads, and clean an evaporator cooler before winterizing it.

If any of these steps are not done correctly, it can cause the unit to leak when turned on again in the summer.

Another possibility is that the pads need to be replaced. Over time, the pads can become worn down and no longer work as effectively. This will cause the cooler to work harder and use more water, leading to leaks.

Finally, check the cooler’s gaskets and seals to ensure they are intact and not damaged. If they are cracked or broken, they will need to be replaced to prevent leaks.

How to Fix a Float on a Swamp Cooler?

Swamp coolers are a great way to keep cool during hot weather, but they can sometimes develop a problem called “floating.” This occurs when the cooler’s pads become saturated with water, causing them to float. Fortunately, you can take a few simple steps to fix this problem.

i) Check the cooler’s pads to see if they need to be replaced. You’ll need to replace worn-out or damaged pads.

ii) Make sure that the cooler’s water line is not obstructed. An obstruction in the water line needs to be cleared so that water can flow freely.

iii) Check the cooler’s floats to see if they are appropriately adjusted. If the floats are not correctly adjusted, they will not be able to keep the pads submerged in water.

By following these simple steps, you should be able to fix a floating swamp cooler quickly and easily.

How To Replace Swamp Cooler Float?

A swamp cooler float helps regulate the amount of water in the cooler by raising and lowering the water level. If the float becomes damaged, it will need to be replaced. Luckily, this is a relatively straightforward process that can be completed in a few simple steps.

First, turn off the power to the cooler and remove the old float. Next, insert the new float into the housing and secure it. Finally, turn the power on and fill it with fresh water.

Once the cooler is complete, the float will raise and lower as needed to regulate the water level. With a new float, your swamp cooler will be up and running again.

What Should the Water Level Be In a Swamp Cooler?

The cooler will not work effectively if the water level gets too low. Conversely, the cooler will use more water and leak if the water level is too high. As a general rule of thumb, keep the water level at about one inch below the bottom of the tray.

This will allow your cooler to evaporate enough water to cool your home effectively. You may need to adjust the water level occasionally to account for evaporation.

Can You Run a Swamp Cooler 24/7?

To run a swamp cooler for 24 hours, you must either have a continuous flow cooler or add water regularly to a manual swamp cooler. If you have a continuous flow cooler, it will automatically work and can run all day.

You have to add water to manual coolers and change the settings so they work. Although running a cooler for 24 hours is possible, it is essential to note that these devices are most effective in dry, hot weather.

If the humidity is high or the temperature is cool, a swamp cooler may not be able to significantly lower a room’s temperature.

How Safe Are Swamp Cooler Float Valves?

How Safe Are Swamp Cooler Float Valves

A swamp cooler float valve is a key component of this type of air conditioner, as it controls the flow of water into the unit. While swamp cooler float valves are designed to be safe, there have been some instances of them leaking or failing.

In most cases, these failures are due to improper installation or maintenance. However, if you take care to properly install and maintain your swamp cooler float valve, it should provide years of reliable service. 

If you do experience a problem with your swamp cooler float valve, it is usually a simple matter to repair or replace it. So, there is no need to worry about the safety of these devices.

This post outlined the 5 best swamp cooler float valves you can buy for maximum value and ease of installation. These valves can help keep your swamp cooler running safely and efficiently when used properly. Be sure to change the water regularly, and add a mosquito larvicide if needed.

EZ-FLO Evaporative Cooler Float Valve Assembly, 1/4 Inch OD Compression Inlet, Brass Body and Rod, 20289

● Brass metal body
● Plastic float session inlet
Corrosion resistant components
● Molded design for durability
● It is easy to adjust

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top