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Best Coolant For A Water Coolant PC

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Gaming rigs and other high-performance computers are great and all but we’ll be lying if we don’t say they are flawed. One of the biggest problems most users have with them is that they can overheat very quickly. Without proper ventilation or a cooling system, it won’t take long before your rig begins to suffer performance-wise. Worst case scenario – it might ruin your rig too.

For that reason, many PC owners are shifting towards water cooling as a method to help regulate their PCs performance. It’s not just about having a safe water cooling rig, it’s also about finding the best coolant to support that rig as well. With that, we’ve found the 8 best coolant for a water coolant PC that you might want to invest on next time.

01 XSPC EC6 High-Performance Premix Coolant

We’re starting off this list with what believe to be the best of all the coolants out there. The XSPC EC6 High-Performance Premix Coolant is an all-around coolant for PCs and other devices that uses water cooling. Just apply this a little bit at a time and you’ll be surprised at how effective and efficient it can be.

The XSPC EC6 High-Performance Premix Coolant is made out of a blend of vegetable extracts and non-toxic corrosion inhibitors. There’s also a non-toxic dye added to the mix so the product comes in some amazing colors as well. Once you’re done with it, it’s safe to dispose of as well. It’s primary color is red but you can add an assortment of EC6 products to change the hue if you want to. One of the upsides of this coolant is that it’s already pre-mixed.

It’s made specifically for PC water cooling so you don’t need to do anything other than apply it to your container of choice. It has very low electrical conductivity so you don’t have to worry about any short-circuiting while applying the coolant on your device. Of course, it’s still best to take things with caution just to be safe.

Despite having low electrical conductivity, the product has a high thermal conductivity. This means it works really well as a means to regulate the heat for your PC or other devices. Our main issue with it is that it cannot be mixed with water as that would result in its thermal effects from wearing off.


  • Low electrical conductivity
  • Environment-friendly
  • Budget friendly price


  • Not water solluble
XSPC EC6 High-Performance Premix Coolant

02 EKWB EK-CryoFuel Premix Coolant

EKWB EK-CryoFuel Premix Coolant is a coolant that’s primarily clear. However, you can get the coolant in other colors such as green, purple, and orange. One of the focuses of the makers is to create a vibrant-looking coolant. With that, you have some vivid colors that are just waiting to decorate your PC in.

This coolant is compatible with a wide range of PC build materials. These include acrylic, PETG, rubber, and POM Acetal. What this means is that it’s most likely going to be compatible with your PC build regardless of what materials you’ve chosen to build it with. Better yet, the coolant is biodegradable too so it’s easy to dispose of and is environmentally friendly.

One of the best features is that the product is pure and non-toxic. It’s made to ensure that no sediments are going to form within your PC’s tubes. Its low viscosity also means that clogs and other possible problems that could lead to water damage are near impossible. Since the product is already a coolant mix, you can use it as is. There’s no need to add water or anything. It’s a good package already.

This product is revolutionary for PC technicians and enthusiasts alike. It’s one of the most chemically-stable coolants out there and this results in a stable performance that lasts a long time. If you’re looking for thermal efficiency and color stability, then this is the coolant that you’d want to buy for yourself. Although it’s a bit pricey as compared to other brands, it’s still worth getting.


  • Comes in amazing vibrant colors
  • Environmentally-friendly
  • Low-viscosity


  • Slightly pricey
EKWB EK-CryoFuel Premix Coolant

03 PrimoChill VUE

Coolants aren’t typically expensive but there are some brands out there that might cost you a fortune. If money isn’t a problem and you want the best of the best for your PC or other devices, then go for the PrimoChill VUE. The PrimoChill VUE makers want to create one of the coolest looking coolants out there.

With over 25 colors to choose from, it’s obvious that the focus here is to give your PC build some decent aesthetics. The formula of this coolant is made to illustrate amazing fluid flow patterns on your PC’s tubes. As it is water-based, the formula also allows the fluid to stay suspended longer.

When it comes to longevity, the PrimoChill VUE has it all. This coolant has a unique look to it that you won’t find in any other coolants on the market. It’s something that you might want to consider if you want to give your PC a flair that’s unlike any other. This coolant is also non-toxic. It includes inhibitors and natural antimicrobial growth fighters as well. These extra chemicals further ensure the longevity of your coolant.

Not many coolants take care and consideration into this aspect. With that, you’re guaranteed that this coolant is 100% safe to use with all materials that are usually involved when it comes to building a PC rig. Another upside to it is that the product is bio-degradable, pre-dyed, and low conductivity. If you’re looking for a safe and efficient coolant for your PC, this is it.

However, you’ll still have to consider the fact that this is one of the most expensive brands out there. If you’re looking for something more stylish or something that adds more value to your PC rig, then the PrimoChill VUE is the best choice.


  • Superb viscocity and performance
  • Comes in a wide selection of colors
  • Very Stylish


  • One of the priciest coolants out there
PrimoChill VUE

04 Koolance LIQ-702BU-B 702 Liquid Coolant

Who says you have to spend a lot of money to get a good coolant? If budget is an issue, then one of the best that money can buy right now is the Koolance LIQ-702BU-B 702 Liquid Coolant. Despite being cheap, this coolant is able to keep up with the competition very easily.

First off, this coolant comes in a pretty nifty package. It’s a squirt bottle that can double as a reservoir filling. The squirt bottle container makes it easier for you to apply the coolant to your rig. Waste is reduced thanks to its efficient filling capacity. As for the liquid itself, it’s compatible with all sorts of materials including brass, stainless steel, gold, copper, and even all kinds of plastics so it is compatible with your PC build regardless.

The liquid is primarily UV blue-colored. However, it also comes in other colors such as yellow, orange, purple, and red. As it’s low when it comes to electrical conductivity, it can be used for various purposes including for high-end PC rigs. It’s a versatile coolant solution is what we’re getting at. For its price, it’s definitely worth it.

Additionally, the product is also low toxicity and it has corrosion and biological inhibitors. This makes it very sustainable and safe when it comes to cooling metals and preventing any growth of bacteria and biological grow for the long term. That being said, the product can be used for a total of 3 years before it needs to be replaced.

A good way to know when it’s time for a change is if the coolant’s color becomes less vivid. The product itself is also low in viscosity. You won’t have any problems having these run through your PC’s tubes as it won’t clog anything up. It’s worth noting that this coolant has a freezing point of -15°C. It’s best to avoid using it under these temperatures.


  • Can be used for up to years
  • Cost-effective due to price and longevity
  • Clog-proof


  • Low freezing point
Koolance LIQ-702BU-B 702 Liquid Coolant

05 Corsair Hydro X Series XL5 Performance Coolant

Corsair has long been a staple name when it comes to PC parts and PC accessories. It shouldn’t be surprising that they also have an amazing offering when it comes to coolants. With that, we’d like to introduce you to the Corsair Hydro X Series XL5 Performance Coolant which is the brand’s flagship coolant. Despite being made by Corsair, the Corsair Hydro X Series XL5 Performance is surprisingly cheap. It’s not the cheapest but it’s in the mid-price range when it comes to coolants. It comes with amazing features and qualities that make it the perfect coolant for custom water cooling loops inside PCs. One standout feature is its amazing hue which makes it the perfect addition to any PC rig. In terms of colors, the coolant is available in purple, red, green blue, and clear.

To put it simply, it’s bound to fit the aesthetics of your PC build regardless of what that may be. The Corsair Hydro X Series XL5 Performance features a long-lasting formula. It prevents corrosion, sediment build-up, and bacteria build-up as well. The coolant is made to last on your PCs. It can take you around 3-5 years before you’re going to need to replace the coolant which is certainly top of the line when it comes to other coolants in the market.

Perhaps the best is that this coolant is made to run with the Corsair line of products. The brand has various products that will allow you to build a water-cooled PC easily. Using the Corsair Hydro X Series XL5 Performance as the star of that build will ensure that you have a solid, high-performance PC build to help support your gaming and other PC needs.


  • Works well with other Corsair products
  • High longevity
  • Built exclusively for high performance


  • Other coolants have a wider selection of colors
Corsair Hydro X Series XL5 Performance Coolant

06 XSPC ECX Ultra Concentrate Coolant

Another great offering from XSPC is the XSPC ECX Ultra Concentrate Coolant. It’s a slightly more expensive coolant compared to the other XSPC product on this list but that extra price hike is well worth it considering what you are getting. It’s considered by many enthusiasts as the superior product when it comes to PC water cooling.

Our main gripe with it is that it isn’t pre-mixed. That means you’re going to have to mix the coolant with water first. Ideally, you need to mix a 100 ml bottle of the coolant with at least 900 ml of purified water. All in all, you’re getting 1 liter of coolant with a single bottle. Some users suggest using a higher concentration of the coolant per 900 ml of water. They said using 2 bottles of the coolant is perfect for a liter which can result in a coolant that can last for years.

Once mixed, the product becomes a low electrical conductivity and high thermal conductivity coolant. It’s the best solution for your PC cooling needs. It’s also worth noting that it’s the only non-premixed product on this list so that says a lot about how good this is despite that major flaw it has coming for it.

The coolant is best for various PC components. It provides maximum protection for brass, steel aluminum, nickel, and various acrylic plastics. It’s perfect for almost all PC builds so you don’t have to worry about adjusting when it comes to using this type of coolant for your PC. It’s an excellent choice as it’s compatible with a lot of components and is safe to use in general. Overall, this coolant is an excellent alternative to XSPC EC6 High-Performance Premix Coolant if it’s not available in your local area. Despite it’s flaw, it’s still a good coolant overall.


  • Highly efficient and built for high performance
  • Compatible with most materials


  • Not premixed
XSPC ECX Ultra Concentrate Coolant

Jonas Sunico

Feb 1, 2022

Jonas is a writer with over 6 years of experience in the tech and gaming industry. He holds a bachelor's degree in Journalism from University of the East Philippines and is one of the proud leaders of the academe's Journalism Society. At heart, he's a hardcore tech junkie that loves video games, the latest gadgets, and the wonderful science behind social media and AI.

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