You are not meant to, and cannot usually refill all in one coolers like that. It's very unlikely replacing the coolant will do anything anyway. The coolant you bought is for custom waterloops for computers like this You are better off replacing the thermal paste as that's more likely to be the issue. Send back the coolant if you can Because the coolant in an AIO is sealed in a factory and has a lot of additives like anti corrosion etc, it does not require changing, and the thermal conductivity is very very unlikely to have reduced as at the end of the day it is just water. For most AIOs the pump will die well before anything terrible happens to the coolant Answer from hazetoblack on reddit.com
Corsair
help.corsair.com › hc › en-us › articles › 360054983832-Hydro-X-Filling-your-Hydro-X-series-custom-cooling-loop
Hydro X: Filling your Hydro X series custom cooling loop – Corsair
... Fill the cooling loop reservoir with coolant until the reservoir is nearly full. Turn on your PSU and let the coolant flow through the tubes. Keep an eye out for any leaks in the cooling system.
Reddit
reddit.com › r/buildapc › am i supposed to drain/refill my water coolant for my corsair water cooled cpu pump?
r/buildapc on Reddit: Am I supposed to drain/refill my water coolant for my Corsair Water Cooled CPU pump?
April 28, 2023 -
My CPU temps have been higher than normal recently. I am evaluating all my options and am curious if my cooler needs new liquid.
I looked it up and there are tutorials and whatnot when it comes to draining and replacing the liquid. My Corsair (forget exact model) water cooler is just mainly a fan and radiator that connects two pumps to a metal plate for the CPU.
I have not messed with it since I got it (3 or so years ago). I purchased some water coolant from Corsair on Amazon to refill it. However, is this a mistake? Am I just spending money on something uselsess/scam?
Top answer 1 of 9
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You are not meant to, and cannot usually refill all in one coolers like that. It's very unlikely replacing the coolant will do anything anyway. The coolant you bought is for custom waterloops for computers like this You are better off replacing the thermal paste as that's more likely to be the issue. Send back the coolant if you can Because the coolant in an AIO is sealed in a factory and has a lot of additives like anti corrosion etc, it does not require changing, and the thermal conductivity is very very unlikely to have reduced as at the end of the day it is just water. For most AIOs the pump will die well before anything terrible happens to the coolant
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Lots of misleading answers here. AIO coolers have a 3-5 year lifespan so it could definitely be your AIO even though they are closed loops they are still prone to evaporation, that’s what limits their lifespan topping them up extends their lifespan. Note I said top up not drain/refill. Some AIOs (BeQuiet for example) make this easy by supplying extra coolant and providing a access point to fill top them up. Others are trickier, usually requiring removing the crimp where a hose attaches to the radiator and then pulling the hose. For this reason most people just replace the AIO.
[Experiment] 5 years later: Drilled into AIO radiator to refill coolant. Findings + results. May 26, 2022
r/hardware 4y ago
Anyone know if you can technically drain and refill coolant on an H150I elite cooler from this? Aug 5, 2025
r/Corsair 11mo ago
Water cooling - refill and flush help needed | By: Grasshopper3438 - Digital Storm Forums
Our Passion Customer Reviews Press Reviews Facility Tour Financing HydroLux Cooling · Forums Config Help Customer Reviews Articles & Blog Expert Buying Guide More on digitalstorm.com
Do you need to refill the water in a liquid cooler? - PCPartPicker
Sorry but I'm only new to this liquid cooling thing. I want to know if I have to refill it. If yes, then how? More on pcpartpicker.com
Am I supposed to drain/refill my water coolant for my Corsair Water Cooled CPU pump?
You are not meant to, and cannot usually refill all in one coolers like that. It's very unlikely replacing the coolant will do anything anyway. The coolant you bought is for custom waterloops for computers like this You are better off replacing the thermal paste as that's more likely to be the issue. Send back the coolant if you can Because the coolant in an AIO is sealed in a factory and has a lot of additives like anti corrosion etc, it does not require changing, and the thermal conductivity is very very unlikely to have reduced as at the end of the day it is just water. For most AIOs the pump will die well before anything terrible happens to the coolant More on reddit.com
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April 28, 2023How to tell if AIO is low on liquid / how to refill?
All AIOs get air into them over time thanks to the power of molecules. Unless the AIO specifically has the option to open it up and fill up, it's time to move onto another one. If your temps are suffering, testing to make sure the pump is working, your thermal paste isnt trash, or you have adequate airflow into the radiator are some things you can try before throwing it out. More on reddit.com
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March 30, 2021What are the bubbles in the water cooling loop?
After filling your loop, small bubbles flow through tubing, collect in water blocks, and cloud the reservoir. Despite their appearance, these bubbles are normal and will dissipate naturally. Air expelled from microfins and radiator tubes forms tiny bubbles, which migrate to the reservoir's upper air pocket. Setup quirks like the Heatkiller Tube 200 DDC may prolong bubble removal. Larger air pockets can resolve themselves but may need attention.
titanrig.com
titanrig.com › home › titan rig blog › pc building knowledge base
Filling and bleeding your PC's water cooling system.
How do I get rid of vapor lock?
To prevent vapor lock, use a larger opening to facilitate easy exchange of coolant and air. Bubbles should rise smoothly out of the top, not get trapped. A standard funnel can help by allowing air to escape around the edges with slight lifting, though it requires manual handling. Adding an extra port at the reservoir's top solves vapor lock by separating paths for coolant and air, ensuring smooth coolant flow and air displacement. Incorporating a manual exhaust fitting high in the loop effectively releases trapped air as coolant is poured, ensuring an effortless exit path.
titanrig.com
titanrig.com › home › titan rig blog › pc building knowledge base
Filling and bleeding your PC's water cooling system.
What is meant by vapor lock?
Vapor lock, or air lock, occurs in closed liquid systems when trapped air prevents liquid from entering. This happens if the air cannot escape quickly enough while liquid is being added. Even in an ideal setup, pouring coolant into a reservoir too quickly can block air from escaping, creating bubbles as the liquid gradually displaces the air. If the exit path is too narrow, this equilibrium may not occur smoothly.
titanrig.com
titanrig.com › home › titan rig blog › pc building knowledge base
Filling and bleeding your PC's water cooling system.
YouTube
youtube.com › digital storm
How to drain and refill your liquid cooled Digital Storm PC! [Level Up S2E2] - YouTube
If you need any of the parts mentioned in the video, please contact our customer support staff so we can send these parts out to you.Customer Support Staff1-...
Published February 9, 2021 Views 64K
Titan Rig
titanrig.com › home › titan rig blog › pc building knowledge base
Filling and bleeding your PC's water cooling system.
July 5, 2024 - At this point you’ll need to use the pump in your loop to move the coolant out of the reservoir and into the system. The most common way to do this is to use the power supply in the PC to power the pump. This works perfectly well and it’s usually a convenient way to do it. Remember though: since this is the first time the system has actually had liquid in it, we can’t know for sure if we have any leaks.
YouTube
youtube.com › frame chasers
How to refill/refurbish ANY AIO - YouTube
Join me on facebook Tuesdays and Saturdayshttps://www.facebook.com/Jufes_-103233274794696Join the community over on facebook gaming, twitch and discord to ta...
Published June 28, 2020 Views 171K
MS.Codes
ms.codes › blogs › computer-hardware › how-to-refill-cpu-liquid-cooler
How To Refill CPU Liquid Cooler
February 14, 2024 - When it comes to refilling your CPU liquid cooler, there are a few key steps to follow. Firstly, you'll need to gather the necessary supplies, including the appropriate coolant for your specific cooler and a syringe or funnel for easy pouring. It's important to check the manufacturer's instructions or consult a professional to ensure you're using the correct coolant.
YouTube
youtube.com › watch
How to refill water cooling systems | be quiet! - YouTube
Compact water cooling systems (also known as "AiO") are really low-maintenance. But the one thing that you should do is refill their water - either every oth...
Published January 27, 2021
YouTube
youtube.com › emorindom
How to Refill an AIO Liquid Cooler - YouTube
My first simple guide on how to change and refill the coolant of an AIO liquid cooler
Published November 17, 2021 Views 27K
AEANET
aeanet.org › home › how to refill liquid cooling in a pc?
How to Refill Liquid Cooling in a PC? - AEANET
March 12, 2026 - Signs of coolant contamination include discoloration, cloudiness, or the presence of particles in the liquid. If you suspect contamination, drain the system and flush it with distilled water before refilling. A clean system is a happy system! Absolutely not! Automotive antifreeze contains additives that are harmful to PC components.
Digital Storm
digitalstorm.com › forums › water-cooling-refill-and-flush-help-needed-tidf57545
Water cooling - refill and flush help needed | By: Grasshopper3438 - Digital Storm Forums
March 8, 2024 - Our Passion Customer Reviews Press Reviews Facility Tour Financing HydroLux Cooling · Forums Config Help Customer Reviews Articles & Blog Expert Buying Guide
YouTube
youtube.com › watch
How Do You Clean And Refill PC Liquid Cooling Systems? - Ultimate PC Gaming Guide - YouTube
How Do You Clean And Refill PC Liquid Cooling Systems? Are you looking to keep your gaming PC running cool and efficiently? In this detailed video, we'll gui...
Published September 18, 2025
YouTube
youtube.com › ecologicaltime
How to disassemble and refill a liquid CPU cooler and reassemble - Cooler Master Master Liquid 240 - YouTube
How to disassemble and refill a liquid CPU cooler and reassemble - Cooler Master Master Liquid 240
Published July 24, 2020 Views 3K
Quora
quora.com › Do-you-have-to-refill-a-GPUs-liquid-cooler-If-so-how
Do you have to refill a GPU's liquid cooler? If so, how? - Quora
Answer: custom loops yes premade oens usually no, at least ot for a very long time ones that you amy have to refill wihtin a remotely sane tiemframe will usually have a port for that in that case maek sure oyu use an at least similar coolant mixture
MAINGEAR Support
help.maingear.com › maingear support › knowledge base › maintaining your maingear apex liquid cooling system
Maintaining your MAINGEAR APEX liquid cooling system - MAINGEAR Support
September 30, 2025 - To avoid chemical reactions or ... coolant. If you are performing a full system flush, your loop can be safely refilled with either distilled water or a PC-grade coolant such as MAINGEAR High-Performance Coolant....
PCPartPicker
pcpartpicker.com › forums › topic › 179834-do-you-need-to-refill-the-water-in-a-liquid-cooler
Do you need to refill the water in a liquid cooler? - PCPartPicker
If it's a closed loop (aka AIO) liquid cooler, then you should never need to refill or change your water.
EK Fluid Gaming
ekfluidgaming.com › news › how-to-maintain-a-liquid-cooled-pc
News - How To Maintain a Liquid Cooled PC – Fluidgaming
Now you know the basics of how to maintain a liquid cooled PC! For ideal performance, we recommend performing draining, flushing and refilling your EK Fluid Gaming PC every year.
Linus Tech Tips
linustechtips.com › computer hardware › cooling › custom loop and exotic cooling
When do replace liquid in water cooling desktop PC - Custom Loop and Exotic Cooling - Linus Tech Tips
December 27, 2020 - How often should I be replacing liquid in my PC? What is the best liquid to put in when refiling? Can someone please send me a link as to how to change the liquid as wellf? I can send my PC specs, just need some help please! My first time doing this.
PCGamesN
pcgamesn.com › hardware › pc games hardware
How to change coolant in your AIO cooler
February 8, 2024 - In this guide, we'll show you how to change the coolant in your AIO cooler, as well as taking you through a few other AIO maintenance tricks, such as how to clean the contact plate and dust the radiator. If your AIO liquid cooler is performing poorly, there are various issues that could be at play.
Corsair
corsair.com › explorer › diy builder › custom cooling › filling your hydro x series custom cooling loop
Filling your Hydro X series custom cooling loop | CORSAIR
April 4, 2023 - If you have an external PSU, you ... in your PC system inconvenient. ... Fill the cooling loop reservoir with coolant until the reservoir is nearly full. Turn on your PSU and let the coolant flow through the tubes.
YouTube
youtube.com › watch
Filling the Loop - YouTube
Hello everyone and welcome to another video tutorial from EK Water Blocks, where we will show you how to fill up your custom liquid cooling loop. Just pay at...
Published July 30, 2019