Kühler H2O 1250



The Antec KÜHLER H2O 1250 provides maximum-performance liquid cooling for your CPU and delivers best-in-class performance in a quick, easy-to-install package. Unlike traditional liquid cooling systems, this self-contained unit comes prefilled and requires no maintenance. Two 120 mm voltage-controlled (PWM) fans and dual extra large pumps ensure quiet, efficient cooling, while the 240 mm radiator maximizes cooling surface area to dissipate heat from the highest performance CPUs on the market.

Kühler H2O 1250

Features and Specs


RGB LED illuminates your case and changes color to indicate CPU temperature. With the help of The Grid software, you can set the LED lighting to match the color scheme to match your rig. During extensive and high demand gaming, no need to pause or exit, monitoring CPU temperature is made easy with the temperature controlled LED. Take a quick glance and carry on dominating in the game!


The dual 120mm Pulse Width Modulation (PWM) fans are fused with directional blades that channel air through the radiator for optimal cooling. Two identical pumps in parallel will increase the liquid's flow rate and reach maximum performance. The Kuhler H2O 1250 comes pre-filled, and never needs refilling or priming. The easy-bend tubes allow for maximum flexibility in radiator positioning and are sealed tight shut to avoid an leakage.


The included Antec Grid™ software helps you monitor and control the Antec KÜHLER H2O 1250’s performance and allows you to customize its stylish RGB LED. Designed to unlock the maximum potential of your CPU, the Antec KÜHLER H2O 1250 delivers exceptional cooling when you need it the most. Take your PC’s Quiet Computing™ to the next level with liquid cooling performance at a price that rivals aftermarket air coolers.

** Make sure to have the latest Microsoft .NET Framework update **
**Must uninstall the old version before install Antec GRID V2.1**
if the Grid software does not work, please contact support@antec.com


The Kuhler H2O 1250 includes a newly designed universal mounting bracket that works with either an Intel or AMD CPU.

Fan Speed 600 - 2400 RPM
Radiator Dimensions

280 mm x 120 mm x 27 mm / 1.0" x 4.7" x 1.1"

Fan Dimensions (2 total)

120 mm x 25 mm / 4.7" x 1.0"

Cold Plate + Pump Height 1.0" / 26 mm
Tubing Length 11.8" / 300 mm
Cooling Liquid Safe, environmentally-friendly, anti-corrosive
Net Weight 2.9 lbs / 1.3 kg
CPU Socket Compatibility

Intel LGA

775, 1150, 1155, 1156, 1366, 2011


AM2, AM2+, AM3, AM3+, FM1, FM2

Warranty 3 years
Manual Download File type File size
Kuhler H20 1250 Manual EN 4,146.52 Kb
Product Flyer Download File type File size
Kuhler H20 1250 Flyer EN 1,532.94 Kb
Other Material Download File type File size
Antec Grid V2.0 4,488.73 Kb
Intel Scoket Installation Guide 5,516.38 Kb
Hotfix MS.Net Framework 775.92 Kb
ANTEC GRID V2.1 07102015 50,292.73 Kb
Award Publisher Title Language Date
overclock3d.net Kühler H2O 1250 The performance of the Kuhler isn't as good as we were expecting, especially at the high end. With its fans spinning at an ear splitting 2100RPM the Kuhler 1250 is very loud indeed yet fails to...

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en 2014-03-25
hardocp.com Kühler H2O 1250 The Kuhler 1250 from Antec surprised us in many ways and showed us that the shortcomings of the Kuhler 950 were isolated incidents. The performance of the Kuhler 1250 was equally outstanding...

Read review
en 2014-02-20
youtube.com Kühler H2O 1250 en 2014-02-13
tweaktown.com Kühler H2O 1250 en 2014-01-08
hardwarecanucks.com Kühler H2O 1250 en 2014-01-08
hardocp.com Kühler H2O 1250 en 2014-01-08
youtube.com Kühler H2O 1250 en 2014-01-08
youtube.com Kühler H2O 1250 en 2014-01-08
youtube.com Kühler H2O 1250 en 2014-01-08
gamersnexus.net Kühler H2O 1250 The approach and design philosophy, at a top-level, is obviously the same. A radiator is a radiator. That's not news to anyone. The same for a pump. What's unique here is that Antec has applied a...

Read review
en 2013-12-23

Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM Overview - Newegg TV


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