How-to Guides                                                   

 starts making a gurgling, bubbling, or sloshing noise, don’t panic. This is usually caused by trapped air in the loop, which can reduce cooling performance and increase noise.

In this guide, we’ll explain what causes bubbling sounds in a liquid CPU cooler and how to fix them step by step—so your PC stays cool and quiet.

Why Does My AIO Cooler Make a Bubbling or Gurgling Noise?

How to Fix Bubbling Noise in an AIO Liquid CPU Cooler

not positioned at the highest point of the loop

. Ideally, the radiator should be mounted higher than the pump so that any air collects in the radiator and doesn’t damage the pump.

Slowly tilt your PC case left and right to help dislodge air bubbles stuck in the tubing. This encourages the bubbles to move to the radiator, where they won’t interfere with the pump.

Use your cooler’s software to set the pump speed to 100% and let it run for 30–60 minutes. This increases fluid pressure in the loop and helps push out trapped air.

Step 4: Rotate the Case to Different Angles

If the bubbling noise persists, try rotating your case about 45 degrees in various directions. This can help release stubborn bubbles that haven’t yet settled.

⚠️ Pro Tip: Since these steps involve moving the PC, it’s a good idea to remove heavy components like the GPU and mechanical hard drives to avoid damage during handling.

What If the Bubbling Noise Doesn’t Stop?

If the noise continues even after these steps, your AIO cooler may have shipped with excess air or developed a leak. Contact the manufacturer’s support for further assistance or to request a replacement.





If your AIO liquid cooler starts making a gurgling, bubbling, or sloshing noise, don’t panic. This is usually caused by trapped air in the loop, which can reduce cooling performance and increase noise.

In this guide, we’ll explain what causes bubbling sounds in a liquid CPU cooler and how to fix them step by step—so your PC stays cool and quiet.



Why Does My AIO Cooler Make a Bubbling or Gurgling Noise?





Designed air pockets: AIO (all-in-one) liquid coolers are shipped with a small amount of air in the system to allow for thermal expansion and prevent hose damage.



Coolant evaporation over time: As you use your PC, a small amount of coolant can evaporate, increasing the amount of air in the loop and causing the familiar gurgling or sloshing sound when the pump runs.



How to Fix Bubbling Noise in an AIO Liquid CPU Cooler

Step 1: Check the Pump Installation

Ensure that the pump is not positioned at the highest point of the loop. Ideally, the radiator should be mounted higher than the pump so that any air collects in the radiator and doesn’t damage the pump.







Related Guide:





Step 2: Gently Tilt the PC Case

Slowly tilt your PC case left and right to help dislodge air bubbles stuck in the tubing. This encourages the bubbles to move to the radiator, where they won’t interfere with the pump.







Step 3: Run the Pump at Maximum RPM

Use your cooler’s software to set the pump speed to 100% and let it run for 30–60 minutes. This increases fluid pressure in the loop and helps push out trapped air.







Step 4: Rotate the Case to Different Angles

If the bubbling noise persists, try rotating your case about 45 degrees in various directions. This can help release stubborn bubbles that haven’t yet settled.



⚠️ Pro Tip: Since these steps involve moving the PC, it’s a good idea to remove heavy components like the GPU and mechanical hard drives to avoid damage during handling.



What If the Bubbling Noise Doesn’t Stop?

If the noise continues even after these steps, your AIO cooler may have shipped with excess air or developed a leak. Contact the manufacturer’s support for further assistance or to request a replacement.





(Video guide courtesy of CORSAIR LAB)

How to fix AIO cooler bubbling noise and keep your PC cool and quiet.

How to Fix AIO Liquid Cooler Bubbling or Gurgling Noise

Hardware Tips                                                   

As processors become more powerful, their heat output has also increased significantly. More and more gamers and creators are opting for liquid coolers to help keep their CPUs cool.

However, many beginners or upgraders often have one common question when choosing a liquid cooler: 

In short, thanks to years of technological improvements, modern 

 have greatly reduced the risk of leaks — but that doesn’t mean there’s 

Why Are Modern Liquid Coolers Less Prone to Leaks?

The technology behind liquid coolers has matured considerably. The tubing, fittings, and radiator joints now use more durable composite materials that resist high temperatures and repeated bending.

To ensure product quality, most brands conduct 

 before shipping, making sure the cooler leaves the factory without defects.

Modern coolants use non-conductive, corrosion-resistant special formulas, which help prevent evaporation and crystallization. This keeps internal pressure stable and minimizes the risk of leaks.

, delivering reliable cooling performance with a stylish and stable design.

Looking for a high-performance liquid cooler that also looks great? Look no further than the 

, offering a high resolution of 480×480 pixels. 





As processors become more powerful, their heat output has also increased significantly. More and more gamers and creators are opting for liquid coolers to help keep their CPUs cool.
However, many beginners or upgraders often have one common question when choosing a liquid cooler: Do liquid coolers still leak?



In short, thanks to years of technological improvements, modern All-In-One (AIO) liquid coolers have greatly reduced the risk of leaks — but that doesn’t mean there’s zero risk. In rare cases, leaks can still occur.



Why Are Modern Liquid Coolers Less Prone to Leaks?



Advanced Manufacturing Techniques

The technology behind liquid coolers has matured considerably. The tubing, fittings, and radiator joints now use more durable composite materials that resist high temperatures and repeated bending.



Rigorous Factory Testing

To ensure product quality, most brands conduct pressure tests and leak tests before shipping, making sure the cooler leaves the factory without defects.



Improved Coolant Formulations

Modern coolants use non-conductive, corrosion-resistant special formulas, which help prevent evaporation and crystallization. This keeps internal pressure stable and minimizes the risk of leaks.







What Can Cause a Liquid Cooler to Leak?





Severe impacts during shipping that damage the cooler



Abnormal use, such as excessive pulling or bending of the tubing



Long-term use exceeding 8 years



How to Minimize the Risk of Leaks





Avoid bending the tubes excessively during installation



Keep the inside of your case dry and tidy



Choose a reputable brand (such as darkFlash)



Consider replacing your liquid cooler if it’s beyond its warranty period





Recommended Liquid Coolers: DV360S



(DV360S Liquid CPU Cooler)



DV360S liquid cooler combines a 320×320 IPS LCD display, ARGB lighting integration, and a copper base water block, delivering reliable cooling performance with a stylish and stable design.



Recommended Liquid Coolers: DN360S





(DN360D Liquid CPU Cooler)



Looking for a high-performance liquid cooler that also looks great? Look no further than the darkFlash DN series liquid coolers! The DN360D comes equipped with a 2.1-inch display, offering a high resolution of 480×480 pixels. 

With improved engineering and quality control, leaks have become uncommon.

Do Liquid Coolers Still Leak?

Build Guides                                                    

 liquid coolers are types of liquid cooling systems for computers. The main differences between them lie in cooling performance, ease of installation, and budget considerations. Understanding the distinctions between these two systems is crucial for choosing the right one for your needs.

pre-assembled, closed-loop liquid cooling system

 that includes a water block, pump, tubing, and radiator. It is designed to offer better cooling performance than traditional air coolers, helping CPUs maintain low temperatures under heavy workloads.

AIO coolers are low-maintenance and easy to install, making them very popular among DIY PC builders.

A typical AIO liquid cooler consists of the following components:

 that users build from individual components. Unlike AIO coolers, each part—such as the CPU block, reservoir, radiator, pump, tubing, and fittings—must be purchased and assembled separately.

Custom loops deliver top-tier cooling performance and maximum customization, but they are more complex to build, time-consuming, and costly to maintain.

A typical custom loop includes the following:





Both AIO (All-In-One) and custom loop liquid coolers are types of liquid cooling systems for computers. The main differences between them lie in cooling performance, ease of installation, and budget considerations. Understanding the distinctions between these two systems is crucial for choosing the right one for your needs.



AIO (All-In-One) Liquid Coolers







What is an AIO Liquid Cooler?

An All-In-One (AIO) Liquid Cooler is a pre-assembled, closed-loop liquid cooling system that includes a water block, pump, tubing, and radiator. It is designed to offer better cooling performance than traditional air coolers, helping CPUs maintain low temperatures under heavy workloads.



AIO coolers are low-maintenance and easy to install, making them very popular among DIY PC builders.







Components of an AIO Cooler

A typical AIO liquid cooler consists of the following components:





Water Block: Mounted on the CPU, it contains a copper base and an integrated pump, responsible for transferring heat from the CPU to the coolant.



Pump: Usually integrated into the water block (though some models have it on the tubing), it circulates the coolant through the loop.



Radiator: Transfers heat from the coolant to the air, typically using fans to aid the process.



Fans: Mounted on the radiator to help dissipate heat from the warm coolant.



Pros





Easy to install: Comes pre-assembled, so even beginners can install it with ease.



Maintenance-free: Sealed loop system that requires no refilling or cleaning during its lifespan.



Stable performance: Offers better cooling than most air coolers, especially for high-performance CPUs.



Clean aesthetics: Often features RGB lighting and stylish water block designs for visual appeal.



Cons





Limited lifespan: Pumps usually last 3–5 years; over time, coolant may evaporate and reduce cooling performance.



Non-serviceable: If any internal component fails, you must return it to the manufacturer for repair or replacement.



Custom Loop Liquid Cooling







What is a Custom Loop?

A custom loop liquid cooling system is an open-loop system that users build from individual components. Unlike AIO coolers, each part—such as the CPU block, reservoir, radiator, pump, tubing, and fittings—must be purchased and assembled separately.

Custom loops deliver top-tier cooling performance and maximum customization, but they are more complex to build, time-consuming, and costly to maintain.







Components of a Custom Loop

A typical custom loop includes the following:





CPU Block: Mounted on the CPU to absorb and transfer heat into the coolant.



Pump: Drives coolant through the entire loop.



Reservoir: Stores coolant, allows for easy monitoring of coolant levels, and helps with refilling and air removal.



Tubing: Carries coolant through the loop. Available in soft tubing and hard tubing options.



Coolant: Transfers heat and can be clear or colored for aesthetics.



Fittings: Connect tubing to components; ensure tight seals to prevent leaks.







Pros





Superior cooling performance: Can cool both CPU and GPU, ideal for heavy overclocking or workstation setups.



Highly customizable appearance: Use of hard tubing, distribution plates, colored coolant, and RGB lighting enables fully personalized aesthetics.



Scalability: Supports dual radiators, large reservoirs, multiple loops, and sensor integration.



Cons





High skill requirement: Requires knowledge of liquid cooling and hands-on assembly experience—not beginner-friendly.



Time-consuming installation: Can take hours or even days to complete; includes leak testing and air bleeding.



Expensive: Individual components can be costly—entire setups often cost hundreds of USD.



Higher risk: Improper installation can lead to coolant leaks and potential hardware damage.



Buying Recommendations





AIO Liquid Cooler: Ideal for regular gamers and users who want good cooling with minimal maintenance. Offers a balanced choice between performance and convenience.



Custom Loop Cooling: Best suited for enthusiasts who seek maximum performance and enjoy building PCs from the ground up. Offers unmatched cooling and aesthetics but demands time, skill, and budget.



DY470 Custom Loop Installation Video





Compare AIO and Custom Loop cooling solutions to find the right fit for your PC.

How to Choose a Liquid Cooler: AIO vs. Custom Loop Cooling

When your CPU is under heavy load, temperature spikes are inevitable. While traditional air coolers are budget-friendly, they often struggle to keep up with high-performance processors. That’s where liquid coolers come in — the go-to choice for gamers and power users alike.

But have you ever wondered what a liquid cooler actually is, and why it outperforms traditional air cooling systems?

A liquid cooler is a closed-loop system that circulates coolant to absorb and transfer heat away from the CPU. The coolant carries the heat to a radiator, where it's released into the air with the help of fans — all while maintaining high efficiency and low noise levels.

Liquid has a much higher thermal conductivity than air, allowing it to draw heat away from the CPU faster. This is especially beneficial for high-end CPUs or overclocked systems that generate a lot of heat.

Since liquid cooling is more efficient, fans don’t need to spin at high speeds to keep temperatures low. As a result, the system stays quieter during operation.

Liquid coolers often have a cleaner, more compact design compared to bulky air coolers. With modern additions like built-in screens on the water block and RGB fans, they add visual appeal and are perfect for gaming or showcase builds.

Liquid coolers can keep temperatures low even under extended high workloads, reducing the risk of thermal throttling and ensuring better system stability and performance over time.

Who Should Consider Getting a Liquid Cooler?

If you're running a top-tier processor, maintaining stable output and avoiding heat damage is key. A liquid cooler helps efficiently remove excess heat, keeping your CPU at safe operating temperatures.

Enthusiasts with Basic PC Hardware Knowledge

While liquid coolers offer powerful performance, they do come with a limited lifespan (typically 5 to 8 years due to the use of coolant). Once the warranty ends, it's recommended to replace the cooler — making it slightly more maintenance-intensive than air coolers.

Liquid coolers now come in all kinds of designs, from minimalist to flashy. Some even include customizable screens on the water block. They’ve evolved from simple cooling tools into centerpiece components of high-end custom PC builds.





When your CPU is under heavy load, temperature spikes are inevitable. While traditional air coolers are budget-friendly, they often struggle to keep up with high-performance processors. That’s where liquid coolers come in — the go-to choice for gamers and power users alike.

But have you ever wondered what a liquid cooler actually is, and why it outperforms traditional air cooling systems?



What Is a Liquid Cooler?

A liquid cooler is a closed-loop system that circulates coolant to absorb and transfer heat away from the CPU. The coolant carries the heat to a radiator, where it's released into the air with the help of fans — all while maintaining high efficiency and low noise levels.







How Does a Liquid Cooler Work?





Water Block (CPU Block)
Mounted directly on the CPU, the water block has a thermal metal base that makes contact with the CPU and coolant. Thermal paste is applied to enhance heat transfer from the CPU to the block.



Pump
The pump keeps the coolant circulating through the system.



Radiator
The heated coolant flows into the radiator, where large surface-area fins dissipate the heat.



Fans
Attached to the radiator, fans help expel the hot air from the case quickly and efficiently.





(Liquid Cooling, intel)



Advantages of Liquid Coolers

Superior Cooling Performance

Liquid has a much higher thermal conductivity than air, allowing it to draw heat away from the CPU faster. This is especially beneficial for high-end CPUs or overclocked systems that generate a lot of heat.







Quieter Operation

Since liquid cooling is more efficient, fans don’t need to spin at high speeds to keep temperatures low. As a result, the system stays quieter during operation.







Sleek and Stylish Aesthetics

Liquid coolers often have a cleaner, more compact design compared to bulky air coolers. With modern additions like built-in screens on the water block and RGB fans, they add visual appeal and are perfect for gaming or showcase builds.







Stable Long-Term Performance

Liquid coolers can keep temperatures low even under extended high workloads, reducing the risk of thermal throttling and ensuring better system stability and performance over time.



Who Should Consider Getting a Liquid Cooler?

Users with High-End CPUs

If you're running a top-tier processor, maintaining stable output and avoiding heat damage is key. A liquid cooler helps efficiently remove excess heat, keeping your CPU at safe operating temperatures.







Enthusiasts with Basic PC Hardware Knowledge

While liquid coolers offer powerful performance, they do come with a limited lifespan (typically 5 to 8 years due to the use of coolant). Once the warranty ends, it's recommended to replace the cooler — making it slightly more maintenance-intensive than air coolers.



Users Who Value Aesthetic Builds

Liquid coolers now come in all kinds of designs, from minimalist to flashy. Some even include customizable screens on the water block. They’ve evolved from simple cooling tools into centerpiece components of high-end custom PC builds.





Understand how liquid coolers work — and find out if they're right for you!

Everything You Need to Know About How Liquid Coolers Work

Passionnés de jeux vidéo et de montage informatique, nous, chez darkFlash, sommes fiers de concevoir des produits impressionnants et exceptionnels grâce à des équipements haut de gamme. Pour cela, nous assemblons et testons nous-mêmes boîtiers PC, systèmes de refroidissement pour processeur, ventilateurs et même chaises et tables gaming.

Notre objectif est de créer des produits qui transforment l'expérience de chaque utilisateur.

flash sombre

As an enthusiast of games and computer DIY in this age, we, darkFlash, feel proud and grateful for keep thinking how to develop impressive and extraordinary products with high-end facilities by assembling and using the PC cases, CPU coolers, case fans, and even gaming chairs and tables in person.

Our goal is to create products that could extremely exert its effect by every user.