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Antec Kuhler H2O 620 Liquid CPU Cooling System LGA775/1155/1156/1366 AM2/AM3/AM3/FM1 + 2000RPM

This product can only be exchanged or replaced with the exact same item.

LGA2011 Bracket Included
Antec Kuhler H2O 620 Liquid CPU Cooling System LGA775/1155/1156/1366 AM2/AM3/AM3/FM1 + 2000RPM - 1
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Antec Kuhler H2O 620 Liquid CPU Cooling System LGA775/1155/1156/1366 AM2/AM3/AM3/FM1 + 2000RPM - 59537_l.jpg Customer Photos (0)
Reg. Price: $69.95  CAD
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   Shipping Weight:   2.2 lbs
   Part #: KUHLER H20620
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Features    [ Edit | History ]

Specifications    [ Edit | History ]
The Antec KÜHLER H2O 620 delivers high-performance liquid cooling for your CPU in a quick, easy-to-install package. Unlike traditional liquid cooling systems, this self-contained unit comes prefilled and requires no maintenance. The voltage-controlled 120 mm fan and 3rd generation copper coldplate ensure efficient cooling, while the estimated 50,000 hour pump lifetime means this cooler is even likely to outlast the system it cools. Lastly, easy-bend flexible tubing allows the KÜHLER H2O 620 to be installed in nearly any orientation. Take your PC's Quiet Computing™ to the next level with liquid cooling performance at a price that rivals aftermarket air coolers.

 BmR Review


  • CPU Socket Compatibility:
    - Intel LGA 775, 1155, 1156, 1366, AMD AM2, AM3, AM2+, AM3+
  • Low profile pump ensures exceptional liquid circulation while preserving internal airflow
  • Non-corrugated easy-bend tubes for maximum flexibility in radiator positioning
  • Intelligent noise / speed-control fan for quiet, efficient cooling
  • Latest generation copper cold plate for optimal conduction
  • Cooling Liquid - Safe, environmentally-friendly, anti-corrosive
  • Fan Speed: 1450 - 2000 RPM
  • Tubing Length: 13.0" / 330 mm
  • Radiator Dimensions:
    - 5.6" (H) x 4.7" (W) x 1.1" (D) /
    - 151 mm (H) x 120 mm (W) x 27 mm (D)
  • Fan Dimensions:
    - 4.7" x 1.0" / 120 mm x 25 mm
  • Cold Plate + Pump Height:
    - 1.1" / 27 mm
  • Net weight: 1.5 lbs / 0.7 kg
  • AQ3 - Antec Quality 3 year limited warranty on parts and labor
  • Antec KUHLER H20620 Customer Reviews

    Product reviews on are screened for relevance and inappropriate content. Reviews may contain inaccurate information about the product. If there is a discrepancy, please use the Flag this Review link located beside each review. Reviews are not an endorsement expressed by, but opinions from customers based on their own experience with a product. We do not recommend you make purchasing decisions based on facts or opinions expressed regarding Antec KUHLER H20620 reviews.
    Experience: 11 Months
    Runs quiet for the first few months
    Runs loud for the next few months, leaks on your system and kills your compoents
    For the first few months it ran nice and quiet with low temperatures and no signs of leaking or bubbles forming. I installed it in the orientation recommended by the manual and bled the air to the top of the radiator as recommended by many reviewers on the internet.

    The pump started being really noisy after a few months, then about 11 months after installing it, it leaked. Probably about a third of the liquid is gone, that's why my cpu ran up to over 100 degrees C. Graphics card is dead too now, thanks to the puddle of hot coolant that was sitting on it.

    Would not recommend. Keep in mind the OEM is ASETEK on this guy, so other brands who use them also suffer from this problem.

    Antec warranty office is still closed, I'll update  when I can reach them but I don't have very high hopes for their warranty service.

    Experience: 1 Months
     Verified Owner
    Great price
    Pump is virtually silent
    Provides decent cooling
    Stock 120MM fan is loud, and only 2-pin.
    I got this for about $40 on sale here. For the price, it's awesome. It keeps my system cool enough, and the small area the pump itself takes up gives room for airflow and looks much better than a massive air cooled heatsink.

    My only issue with the kit was the fan- it's only a 2 pin, and runs at 100% all the time which was quite annoying. I replaced it with a Cougar V12HP and now it's very quiet, even at 100% RPM.

    I was a little disappointed Antec does not light up the logo on the pump anymore, but at $40 I won't complain. A great purchase.

    Experience: 20 Days
     Verified Owner
    Antec quality, h2o stability, easily usable for GPU cooling, compact rad and pump design
    I really can't think of one
    I bought this on sale here at NCIX for 35.99 and couldn't believe it!! I shouldn't have been surprised though, as I got my Antec 920 at NCIX for 59.99 about a year ago, and that was a kick azz deal too!!! Using the 920 for the cpu and the new 620 for the GPU (7870 Tahiti le). Recommend!!!

    Experience: 7 Days
    -doesn't compete for space with tall, ram heatsink fins
    -keeps overclocked cpu temps well within acceptable ramge (32-55 degrees)
    -bring a ton of patience when you install this puppy. I have installed the H50 a handful of times and it was a breeze. The h20 620, not so much. The clips on the seating ring would not stay put so it caused all sorts of problems lifting the ring high enough to get the pump underneath it. Finally, I just had to place it down like I would any other system by fastening it down intact---Put some unwanted pressure on the mobo but finally got it done.
    Other than the installation issues, it's a decent entry to water cooling.

    Experience: 7 Days
     Verified Owner
    Quiet, great airflow
    I really like this, it's my very first water cooling CPU unit. The fan is quite large and produces an excellent air flow and it's also very modestly priced, which is always nice. It keeps my rig between 27-31 degree celsius

    Experience: 1 Days
     Verified Owner
    all suport
    j'ai acheté ce Cooling . tres facile a installer .très performant good price

    Experience: 2 Months
    - price
    - easy install
    - reasonably quiet (relatively and subjectively speaking)
    - none (at least for me)
    Certainly much cooler than many stock air/fan coolers. Appears to provide more consistent cooling (my slightly OC'd CPU reports cooler temps and I've had no stability issues, which I had before, since installing this.

    Experience: 1 Years
    really nice and strong products , good job on my i5 2500k , i got 5.2ghz overclock with this cooler!
    nothing for the moment :)
    very useful for some who dont want to pay too much for a descent cooler.

    Experience: 1 Days
     Verified Owner
    works great
    little tricky to hook up but that's all
    very good product will continue to use until failure.

    Experience: 2 Months
     Verified Owner
    Easy to install and good performance
    this water cooling is better than my air Noctua on my i7 920

     NCIX Forum Messages

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    Messages about Antec Kuhler H2O 620 Liquid CPU Cooling System LGA775/1155/1156/1366 AM2/AM3/AM3/FM1 + 2000RPM

    LGA 1150 compatibility? (nitroblu- Jul 01, 13, 1 Replies) Read this message
    Availability? (Loafer9876- Dec 29, 12, 0 Replies) Read this message
    Installation issue and workaround (dualcells- Dec 26, 12, 0 Replies) Read this message
    CPU Support - 775 Core 2 Duo? (Crazydragonclk- Oct 16, 12, 8 Replies) Read this message
    Fan speed and noise? (ES_Revenge- Aug 24, 12, 5 Replies) Read this message
    Installing with a 80mm to 120mm adapter (Jonathan_P- May 31, 12, 12 Replies) Read this message
    Which one to buy?? (Tommy_N- Oct 14, 11, 12 Replies) Read this message
    cpu burning hot (Randy L- Aug 28, 11, 19 Replies) Read this message
    Pump Clicking noise (Common problem with this pum (Richer_B- Apr 29, 11, 4 Replies) Read this message

    Post a New Message  |    All Messages       Browse NCIX Forums

    Forum messages are not reviewed and may not contain accurate information about a product. Message contents are opinions from customers based on their own experience with a product. We do not recommend you make puchasing decisions based on Forum messages.
    Reviews from the Web

    Below are reviews found on other web sites for this product submitted by customers.

    Posted by: werty316 @01/25/13
    Comment: Antec has thrown their hat into the liquid cooling world and one of the offering they have is the Kuhler H20 620.
    Posted by: Tim_M @04/06/11
    Comment: "the Antec KÜHLER H2O 620 performs very close to the Corsair H50 unit. Coming in at 2.2% better temps than the H50, the margin is small enough to call it a tie. We see the Corsair H70 doing 2 degress better however.[...]getting the same performance without all the noise is simply a win-win."
    Posted by: lef @03/11/11
    Comment: "This unit is able to slightly outperform the direct competition while keeping a very close second to a version that includes two fans and a thicker radiator.[...]Antec has more bang for the buck than does any of its competition."
    Posted by: lef @03/08/11
    Comment: "the performance came very close to the Corsair H70 unit with its big radiator and dual fans. The 620 also went about its cooling duties in a very quiet manner, something that can't be said of the other all-in-one liquid cooling solutions I've tested."
    Posted by: lef @03/08/11
    Comment: a 3dGameMan video review: "It's easy to install, is compact, quiet, performs very well and is affordable. If you're intimated by custom water cooling, this would be a perfect solution."
    Posted by: lef @03/08/11
    Comment: Frankly its performance is almost unbelievably good: its stock-fan performance is 7.2 degrees cooler than Corsair H50, whose radiator appears to be identical. With the high-speed Delta fan on both coolers, the performance gap widens to 9.4 degrees.
    Posted by: totaldoup @03/08/11
    Submit a review link   |   Latest 30 reviews
    Product Warranty
    NCIX provides a 30 day limited warranty on this product.  The remainder of the 1 year warranty is provided by the manufacturer.    Warranty length may vary depending on manufacturer and product.

    All Antec computer cases carry a three (3) year warranty from Antec. 

    Antec''s Global Online Customer Support

    Antec Customer Support by Phone
    1-800-222-6832 (800-22ANTEC)

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