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Antec > 
Item#: N82E16835209080

Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

  • Pump Dim. 4.7" x 2.0"
  • Radiator Dim. 11.0" (H) x 4.7" (W) x 1.1" (D)
  • Fan Dim. 120 mm
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Learn more about the Antec KUHLER H2O 1250

General

Brand
Antec
Series
H2O 1250
Model
KUHLER H2O 1250
Type
Liquid Cooling System

Pump

Pump Dim.
4.7" x 2.0" / 120 mm x 50 mm (Fan+Pump)

Radiator

Radiator Dim.
11.0" (H) x 4.7" (W) x 1.1" (D) / 280 mm (H) x 120 mm (W) x 27 mm (D)

Fan

Fan Dim.
120 mm

Features

Features
The Antec KUHLER 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.

The dual 120 mm Pulse Width Modulation (PWM) fans are fused with directional blades that channel air through the radiator for optimal cooling Two 120 mm voltage controlled (PWM) fans ensure quiet, efficient cooling while the 240 mm radiator maximizes cooling surface area to dissipate heat from the highest performance CPUs on the market.

In addition to an extra long radiator, two extra large pumps work in unison to rapidly circulate coolant through the KUHLER H2O 1250.

The unit is even covered by Antec's renowned AQ3 three year warranty for parts and labor.

Lastly, the included Antec Grid software helps you monitor and control the Antec KUHLER H2O 1250's performance and allows you to customize its stylish RGB LED.

Designed to unlock the maximum potential of your CPU, the Antec KUHLER H2O 1250 delivers exceptional cooling when you need it the most.

Quick Info

Warranty

  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years


Customer Reviews of the Antec KUHLER H2O 1250

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Showing 15 of 15 reviews - Clear Filters

  • Jonathan S.
  • 9/21/2014 11:49:16 AM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

2 out of 5 eggsGood, but unreliable

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: This is a great cooling unit. It kept my AMD 8350 at idle under 28C. When under load, it would stay under 43C. Much better than my Corsair H100. On silent, this is super quiet, sometimes I forget that it is there. I would honestly recommend this. Please read the cons though.

Cons: Installation is a total pain. I have an NZXT Crafted Series Phantom case. Still had a rough time installing this cooler. I had to really maneuver this so it wouldn't bump the RAM.

After installing it, it ran great for about 3-4 months. Then, on bootup, it started freaking out and not sending an RPM to the unit. So the fans will stay between 80-200 rpms. Which keeps my cpu under 48C while browsing the internet. I dare not game. Looks like their software failed miserably. And yes, I have uninstalled and reinstalled the software (and did an update) before all the haters come out.

Other Thoughts: The system itself is fantastic, but the software failed. Yet again an amazing product is released with a subpar backend system that will ruin it.

Did you find this review helpful? Yes No

  • Justin M.
  • 8/28/2014 1:09:30 PM
  • Tech Level: Somewhat High
  • Ownership: 1 day to 1 week
  • Verified Owner

4 out of 5 eggsLarge and in charge

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: Minimal noise when on the silent mode. Somewhat easy installation of unit.

Cons: The included software doesnt have any way to designate when to increase the RPM of the fans. Also VERY large in size, I had to use two of the extenders to get far enough away from my motherboard.

Other Thoughts: Im hoping to get more of the extender brackets for the unit, since for mine to fit I had to double up on one. Ive never delt with Antec customer service so Im hoping this is a smooth transaction.

Did you find this review helpful? Yes No

  • Mike G.
  • 8/20/2014 11:16:17 AM
  • Tech Level: High
  • Ownership: less than 1 day

1 out of 5 eggsMultiple bad pumps - stay away!

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: Interesting design

Cons: Returned two units in a row due to faulty pumps (excessive noise). These were brand new shrinkwrapped boxes.

Mounting backplate is a pain - not shaped well and makes screwing down the cooler a pain.

Other Thoughts: Stay far away from this one. Excessive pump noise on multiple units leads me to believe that there are serious QA problems with this line. I'm returning the replacement and getting something else.

Did you find this review helpful? Yes No

  • Kenneth F.
  • 8/2/2014 6:49:53 AM
  • Tech Level: High
  • Ownership: 1 week to 1 month

3 out of 5 eggsAntec Kuhler H2) 1250 Problem

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: Easy to install in Antec 1100 V2 case. See Antec website for compatible cases - not many.
Keeps temps lower, than without it.

Cons: Backplate flimsy. Tightening 4 cooler head retaining screws easily strips the backplate plastic around the retaining nuts, so you're never sure that you have a good thermal transfer from CPU to the Antec cooler head. I have a 5.5 degree C difference between Bios temp reading and the Antec Grid Controller Program.

Other Thoughts: 1250 design problem - the backplate. The thin plastic around the 4 flush nuts is not strong enough to retain the nuts while tightening the 4 cooler head screws. A last retainer nut started turning in the plastic holder while tightening the last of the four cooling head mounting screws. There's now a 5.5 degree Celsius difference between ASUS motherboard Bios CPU temp reading and the Antec Grid Program, so heat transfer may not be optimal. Antec said grab the nut with a needlenose and tighten the screw, a workaround, but only one edge of the nut is exposed. The rest is flush in the plastic backplate. Grabbing one edge of the nut and the other plastic side, and the nut still turns while trying to tighten. Antec eventually said they would order me a new backplate. I suggested they redesign the backplate to avoid this easy to duplicate problem. The backplate securing method appears flimsy, and it is. I should add that 3 of the mounting screws firmly attached to the backplate inset nuts. Not so with the fourth, and yes, I did follow their instructions in how to tighten the screws. I'm trying to protect a very expensive CPU and I'm just not getting the cooling that I feel is available. Goes up to 37.5 degrees C just playing Crysis 3 (their Grid Program reading), which means the Bios temp would be about 43 degrees C. Just be careful in tightening those cooler head screws. It's very easy to strip the plastic holding the retaining nut for the cooler head screw. I was careful and it still became a problem.

0 out of 1 people found this review helpful. Did you? Yes No

  • Brent H.
  • 7/3/2014 2:41:38 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsAntec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: This is installed in my white NZXT Phantom 630 case with an Asus Sabertooth Z87 and two MSI Twin Frozr III Radeon HD 6950's also using the NZXT Hue RGB LED controller with it at the white setting. Changed the Antec logo to be white as well.. very impressed with the results.. on silent fan mode this will usually sit anywhere from 30c to 34c. if I crank the fans up to about 1700rpm it sits at 28c. Even under 100% Load my i5 4670k still doesn't deviate from it's idle temps.

Cons: Super big, can be a pain to install.

I had a few problems with this bumping into my 8pin power connector at the top of the motherboard so I had to carefully bend the wires on the connector to get it to fit.

DO NOT buy this if you have a mid size case.. the pump sticking off of the fan is about an inch away from touching the heat spreaders on my Corsair Vengeance ram.

2 out of 2 people found this review helpful. Did you? Yes No

  • Scott J.
  • 6/28/2014 6:22:48 PM
  • Tech Level: High
  • Ownership: 1 month to 1 year
  • Verified Owner

4 out of 5 eggsAntec Kühler H2O 1250

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: Much better design that typical self-contained single fan water coolers. Dual fans force hot exhaust up through the radiator. Water block contains LED's which change color, indicating the temperature of the CPU.
Software bundle includes Antec Grid which allows user to control fan speed and monitor internal temperature (Note: Temperature reading is the temp of the water within the closed water circuit, not the CPU).
Works well, keeps CPU nice and cool as advertised.
Must disable the Q-Fan control in the BIOS.

Cons: Size of radiator makes installation difficult. I had to buy a new case in order to be able to use this device (I was due to upgrade my case anyway, so this wasn't necessarily a con for me, but would be for others who are not planning on buying a new case). Check dimensions of the radiator against the potential mounting space before making this purchase!
Instruction manual is absolutely useless.
Fan cables are complicated & somewhat difficult to hook up properly.
Internal USB hub (male) required for software to work.
Tubing between the radiator & cooling block is too short, making installation all the more difficult.

Other Thoughts: This as my first water cooling system. The fact that it's a closed circuit makes it ideal for first-timers, though I plan on moving to more intricate/expensive cooling systems in the future.

1 out of 1 people found this review helpful. Did you? Yes No

  • shahram a.
  • 6/3/2014 11:05:23 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month

3 out of 5 eggsWorst installation, soooo loud

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: - Cools as well as H100/105 bullpark and I paid 55 after rebate for it.

Cons: -Worst instalation!!! This thing shouldve not made it to final design, look at the manual here are the things can go wrong while installing:
1) the back plate has super loose screws that can fall out.
2) the intel/amd holder has a moveble part, it will move to AMD side while your putting on the heatsink
3) the screws that hold the cooler in place are not mounted to the bracket, they can easily come off.

Antec simply doesnt care for user exprince, just for this I will vote with my money and never buy antec again.

- this thing is LOUD my h105 at full load is quiter than this thing at 50-60%

Other Thoughts: This cooler performs in bullpark of other dual rad coolers , its significantley louder than anything corsair has made in past year and the fan/pump design makes it prone to failiture.
Corsair gives you 5 year warranty atlease, these guys dont.

If i paid a penny over 60dollars I say its not worth it.

I simply had horrible exprince with it, something I didnt have with corsair or thermaltake using their liquid coolers.

Not worth a penny over 60 dollars.

0 out of 1 people found this review helpful. Did you? Yes No

  • Gaelen K.
  • 6/2/2014 4:02:16 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsIt's Sooo Kuhl!

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: Very Cool. Keep my Intel 4930 at 28C most of the day. It has peaked at 40C, but that was on a warm afternoon playing Crysis 3 for several hours. It cooled down very quick.

Cons: The fan and cpu block wiring could have been a little better thought out; it can leave a new build feeling a bit messy.

Other Thoughts: The installation of this cooler is nowhere near as hard as some to the reviews make it out to be. Just use a screw driver, not your fingers.

The interface/fan control is Antec-quated. - Har har.

Did you find this review helpful? Yes No

  • Stephen M.
  • 5/22/2014 6:13:13 PM
  • Tech Level: Somewhat High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsVery Nice

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: Keeps my FX-9590 at F AND 30C under regular usage with an 80F ambient temp.

Cons: Install was a task but its well worth the pay off. Installed in a Thor V2. (Remove the fins up top they pop out and buy longer screws that fit in the rad )

Did you find this review helpful? Yes No

  • Michael F.
  • 3/24/2014 4:10:31 PM
  • Tech Level: High
  • Ownership: 1 week to 1 month
  • Verified Owner

5 out of 5 eggsTo be honest

This review is from: Antec KUHLER H2O 1250 Water/Liquid CPU Cooler 240MM

Pros: Very Clean, Great performance, Super simple UI

Cons: Installation a bit tricky

Other Thoughts: Okay, Im going to be honest, this thing is awesome
I have antecs DF-85 Case, and my case is a monster so this cooler is not to big, but a bit to small, but with some use of the provided extra brackets they send you it went it perfectly :)
Now the people saying the UI sucks....yes it looks terrible, but Is designed to be simple, like extremely simple, which is a plus
All in all this cooler is amazing
If you get past the pain of the install then this cooler is awesome :D
I highly recommend
And anyone who builds there own pc knows that you come across problems and that's half the fun of it, making sure stuff fits in and build your beast up :)

2 out of 2 people found this review helpful. Did you? Yes No

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Item#: N82E16835209080
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