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header-product Coolant antifreeze 1 L THERMALTAKE CL-W246-OS00BU-A blue, ready-to-use
38.99 €

Coolant antifreeze 1 L THERMALTAKE CL-W246-OS00BU-A blue, ready-to-use

THERMALTAKE CL-W246-OS00BU-A 1 L coolant Photo 1
THERMALTAKE CL-W246-OS00BU-A 1 L coolant Photo 2
THERMALTAKE CL-W246-OS00BU-A 1 L coolant Photo 3
THERMALTAKE CL-W246-OS00BU-A 1 L coolant Photo 4
THERMALTAKE CL-W246-OS00BU-A 1 L coolant Photo 1
THERMALTAKE CL-W246-OS00BU-A 1 L coolant Photo 2
THERMALTAKE CL-W246-OS00BU-A 1 L coolant Photo 3
THERMALTAKE CL-W246-OS00BU-A 1 L coolant Photo 4
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Coolant antifreeze 1 L THERMALTAKE CL-W246-OS00BU-A blue, ready-to-use

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Short description

Thermaltake CL-W246-OS00BU-A is a ready-to-use blue coolant/antifreeze supplied in a 1 L volume for PC liquid cooling systems. Designed for use in CPU/GPU loops and closed or custom water-cooling circuits, it provides corrosion protection and heat transfer medium without need for dilution. Suitable for maintenance, filling, and topping-up cooling loops.
Available for order: 5 pcs.
Warranty: 2 Years
SKU: 2100244
free shipment

Cheapest delivery:

Venipak Pickup LV, Venipak Locker LV

Pick-up points

Venipak Pickup LV

Venipak Locker LV

Cost

1.89 €

Deliver

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Customer service center
2b. Kengaraga str., Riga, Latvia, LV-1063
22.07.2026 {{selectedOffer.officeDeliveryString}}
free
Courier Delivery Please note that in case of a large parcel additional delivery costs may apply!
27.07.2026 {{selectedOffer.courierDeliveryString}}
From 4.99 € (Weight: 1.10 kg)
Parcel couriers
Venipak Pickup LV / Venipak Locker LV / Latvijas Pasts pakomāts / Unisend LV / DPD Paku skapis / Omniva LV / Latvijas Pasts nodaļa
27.07.2026 {{selectedOffer.parcelStationDeliveryString}}
From 1.89 €
payment
Payment Methods:
Bank transfer, Bank cards on-line, Apple Pay, Google Pay
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Product information

Description

Thermaltake CL-W246-OS00BU-A is a ready-to-use blue coolant/antifreeze supplied in a 1 L bottle for PC liquid cooling systems. Formulated as a pastel, non-transparent high-performance fluid, this coolant is designed for CPU and GPU loops, closed factory circuits and custom water-cooling configurations. The product combines corrosion protection for common loop metals with a low-viscosity heat-transfer medium that is supplied pre-mixed and requires no dilution before use.

Advantages

The coolant offers multi-metal corrosion protection for copper, brass, nickel and aluminum while remaining non-flammable and biodegradable. Its low viscosity improves flow compared with many other coolants, and the liquid surface tension optimizer reduces the risk of airlock to simplify filling and starting a loop. Color-saturated, stable pastel pigmentation provides a consistent appearance in acrylic or PET tubing.

Suitable for

  • Filling and topping-up CPU and GPU liquid cooling loops
  • Closed-loop or custom water-cooling systems in desktop PCs
  • Maintenance, flush-and-refill procedures and seasonal antifreeze protection
  • Systems requiring visible colored coolant for aesthetic builds

Key specifications

  • Volume: 1 L ready-to-use coolant
  • Color: Blue, non-transparent pastel finish
  • Compatibility: Suitable for copper, brass, nickel and aluminum components
  • Viscosity: Low viscosity formula for improved flow at typical operating temperatures
  • Freezing point: approximately -20 °C
  • Boiling point: approximately 165 °C
  • Composition: primarily water-based with propylene glycol content below 6%
  • Shelf life: at least 3 years when stored airtight
  • Environmental: biodegradable, formulated to be eco-friendly

How to use

Before filling, flush the loop thoroughly with distilled water or a compatible cleaning solution and ensure all residues of previous fluids are removed. Shake the bottle gently if needed to homogenize the pastel pigment, then pour the coolant into the reservoir or fill point until the loop is fully filled. Run pumps briefly to circulate fluid and check for leaks; the liquid surface tension optimizer helps reduce airlock but bleed the loop as necessary until steady flow is achieved. There is no need to dilute this ready-to-use product.

Usage recommendations

Use only with components and tubing rated for PC liquid cooling. Perform a pressure/leak test after filling and observe the system for several hours. Replace coolant every 12–24 months or earlier if discoloration, cloudiness or particulate appears. Avoid mixing this coolant with other brands or colors to prevent precipitation; if switching fluids, flush the loop thoroughly before refilling.

Specifications

Product colour:
Blue
All features
Volume:
1 L
Product type:
Ready to use

Design

Product colour:
Blue

Packaging data

Quantity:
1

Description

Machine translation. Load original

Reasons to buy

Flow Like Pure Water

P1000 Pastel Coolant is formulated for exceptional fluidity, behaving much like pure water to ensure smooth circulation throughout your PC cooling loop. Its low viscosity reduces resistance and improves flow performance—measured to be about 26.4% lower than comparable coolants at 20°C and 25.8% lower at 40°C—helping maintain efficient heat transfer in both CPU and GPU circuits.

Anti-Corrosive Ready-to-Use Protection

Thermaltake’s ready-to-use P1000 Pastel Coolant (CL-W246-OS00BU-A) delivers reliable corrosion protection for metals commonly used in cooling systems, including copper, brass, nickel and aluminum. Non-flammable and stable, it comes with an extended shelf life of at least 3 years in airtight containers and requires no dilution—ideal for filling, topping-up and maintaining closed or custom loops. Key properties: boiling point 329°F (165°C), freezing point -4°F (-20°C), propylene glycol <6%, water <94%.

Eco-Friendly Formula

Designed with the environment in mind, the P1000 Pastel Coolant Series uses biodegradable ingredients that do not bioaccumulate or pollute, offering an eco-conscious choice for PC enthusiasts who want effective cooling performance with reduced environmental impact.

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Customer reviews

Customer questions

FAQ

How much does the THERMALTAKE CL-W246-OS00BU-A 1 L coolant cost, and is it available for purchase?

The price is 38.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 5 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 22.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

What is the warranty period?

All THERMALTAKE products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized THERMALTAKE service centers and through AiO.lv

Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. We will assist with consultation, warranty claim processing, and coordination with certified service centers.

How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: product colour, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.
warranty
14-Day Return Policy We are confident in our quality, but if the purchase doesn’t fit — you have 14 days to return the product with peace of mind.
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Fast Delivery Get your orders as quickly as possible — right to your door, parcel lockers, or pickup points across Latvia and the EU.
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Secure Payment Pay the way you prefer: cash, VISA, MasterCard, Apple Pay, Google Pay, bank transfer, or 0% installment plan.
warranty
Quality Since 2008 AiO.lv has been on the market for over 18 years and has earned trust — with more than 6000 genuine positive reviews on Google.