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Thermaltake CL-W114-OS00TR-A C1000 Pure Clear Coolant — main product image
Thermaltake CL-W114-OS00TR-A C1000 Pure Clear Coolant
Thermaltake CL-W114-OS00TR-A C1000 Pure Clear Coolant
Thermaltake CL-W114-OS00TR-A C1000 Pure Clear Coolant
Thermaltake CL-W114-OS00TR-A C1000 Pure Clear Coolant
Thermaltake

Thermaltake CL-W114-OS00TR-A C1000 Pure Clear Coolant

★★★★★4.6 (541 reviews)

Pre-mixed German-engineered coolant that protects your custom loop against corrosion, freezing, and scale buildup.

$40.16*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The Thermaltake C1000 Pure Clear Coolant (CL-W114-OS00TR-A) is a pre-mixed, 1000ml cooling solution engineered in Germany for custom PC water-cooling loops. Its formulation delivers four-way protection — anti-corrosive, anti-freezing, anti-rusting, and water scale prevention — helping to maintain both thermal performance and the longevity of your loop's internal components. Because it is pre-mixed, there is no need to measure concentrates or source distilled water separately; you simply flush your existing system with distilled water and pour the C1000 directly in.

One of this coolant's practical strengths is its broad metal compatibility. It safely contacts copper, brass, nickel, and aluminum, which means it can be used in mixed-metal loops without risking galvanic corrosion — a common concern with budget coolants. The fully transparent formula keeps your loop looking clean and works well in builds where you want the hardware to be the visual focus rather than a colored fluid. With a 3-year shelf life when unopened, it's also a convenient product to keep on hand for maintenance days.

Key Features

Coolant Protection: Anti-Corrosive, Anti-Freezing, Anti-Rusting and Water Scale preventive solution

German Made: Made in Germany, the C1000 is a pre-mixed solution with a 3 Year Shelf Life providing ideal cooling performance

Compliant Metals: Works with Copper, Brass, Nickel or Aluminum made components

Cautions: Flush Cooling system with DI (Distilled Water) prior to installation. Use at own risk, keep out of reach of children

Warranty: 2 Years

Specifications

Brand
Thermaltake
Model
CL-W114-OS00TR-A
Capacity
1000ml
Color
Pure Transparent (Clear)
Type
Pre-mixed Clear Coolant
Protection
Anti-Corrosion, Anti-Freezing, Anti-Rusting, Water Scale Prevention
Compatible Metals
Copper, Brass, Nickel, Aluminum
Country of Manufacture
Germany
Shelf Life
3 Years (unopened)
Warranty
2 Years

Pros & Cons

👍 Pros

  • Pre-mixed formula eliminates the guesswork of mixing concentrates with distilled water
  • Multi-protection formula guards against corrosion, freezing, rust, and water scale in a single product
  • Compatible with all common water-cooling metals including aluminum, which many coolants cannot safely contact
  • German-manufactured with a 3-year unopened shelf life for consistent quality
  • Transparent formula lets you show off your loop without altering tubing or reservoir color

👎 Cons

  • 1000ml may not be enough for larger multi-radiator builds, requiring a second bottle purchase
  • Clear formula offers no UV-reactive or color options for RGB-themed builds
  • Requires a full system flush with distilled water before installation, adding prep time
  • 2-year warranty is shorter than the shelf life of the product itself

Frequently Asked Questions

No, the C1000 is a pre-mixed solution ready to use straight from the bottle. Just flush your loop with distilled water first.
It works with copper, brass, nickel, and aluminum components, covering virtually all custom water-cooling hardware.
Thermaltake recommends replacing the coolant every 12 months for optimal performance, though the unopened bottle has a 3-year shelf life.
No, the Pure Clear variant is fully transparent, so it won't tint your tubing or reservoir.
One 1000ml bottle is typically enough to fill most single-loop custom cooling systems, though larger dual-radiator builds may require a second bottle.

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