Koolance CU1020H

Koolance Logo



We recently looped up our first Koolance radiator on our bench and now it is time to look at the copper radiator from Koolance. For the next few pages we’re going to take a look at the HX-CU1020H. If you have already read the review on the CuV then you can skip the rest of the intro. If you have not well there is a bit of history to explain then. Koolance has produced aluminum radiators for several years now and only recently introduced a line of copper radiators. With aluminum radiators only, there was no need to test them since copper and brass are requirements for our loops, not aluminum. Well lucky for the both of us, we have Koolance copper radiators to put through the paces. The CuH and CuV as I call them are quite a bit different, I was incorrect when I though the only difference was the barb ports. With that, time to look at the Koolance HX-CU1020H a little closer.


Radiator Features

The first thing that comes to mind when you set your eyes on the Koolance HX-CU1020H is the G1/4 barb ports, well for me it was the first thing. You do not see barb ports like this, seems all other radiators have barb ports coming out of the end tanks perpendicular rather than on the same plane. In Lehman’s terms, barb ports coming straight out of the radiator versus at a 90-degree angle. This does present some interesting options especially for routing tubing. But before we ramble on about barb ports, the CuH measures in at 420x126x44mm (LxWxH), which is certainly larger than its sibling. Covering the CuH is a high gloss black paint job, with a bit of spray on the fins but you can certainly tell they are copper by looking closely.

Speaking of those fins… the CU1020H sports 13 rows of 7.5mm wide fins measuring in at 20FPI. 20 Fins/folds per inch is somewhat high compared to most of the other triples we have tested, especially considering the “Low Flow” description Koolance gives this radiator. Putting those fins to good use are 24 (12 per row) 1.5mm wide tubes in 2 pass or U flow configuration. We have a 6mm plenum on the logo side and a 8mm plenum on the other, that leaves us with 30mm of thickness for the core, and roughly 15mm height for the each row of tubes. We will have to wait and see exactly how the 20 FPI performs for thermals, I expected a little lower but I have been wrong before. Wrapping that radiator core is a shell with standard 15mm fan spacing with M4 tapped mount holes. The only major surprise was the barb ports, I have to think the orientation is for another one of Koolance’s products or they had enough feedback asking for it. Either way, an interesting feature none the less.

  • Gloss Black Finish
  • Dual row, Two-pass / u-flow configuration
  • Copper fins, brass end tanks
  • G1/4 Barb ports
  • 20 Fins/Folds Per Inch (FPI)
  • Standard 15mm Fan spacing
  • M4 tapped mounting holes
  • Dimensions: 420x126x44mm (LxWxH)


I cracked a joke at the logo and placement on the CuV, and the CuH does not disappoint either. My only gripe on the logo is that it never seems to fail that the logo ends up being upside down, but with the unique barb ports, that really does not pose a problem this time around. In the picture above, you can see the shell appears to be two parts, which the smaller portion has the 8mm plenum I spoke of earlier. The 2mm will not make much difference for equalizing air distribution, but that 2mm may be needed when mounting fans… just keep that in mind.

On your scroll down here you eyed shots of the 15mm fan spacing and 20 FPI, sorry about the slight blur… I’m going to need to figure out a rig of some sort to take those shots. However, you should still be able to count the FPI for yourself if needed. Up next is a shot of those barb ports I have been talking about since the start of this review.

See what I mean, no bulky end tank just straight to barbs. Luckily, we have all the instruments needed to see if the CuH is low on restriction. And with that, time to move on to pressure drop and see how the dual row U-flow design and those barb ports perform.


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