9L Industrial Water Chiller 2.6gpm Water Cooling System CW-3000 Water Cooler for 40W K40 CO2 Laser Engraving & Cutting Machines, Radiates 50W of Heat per Degree C

Perfect! MUCH better than a pump and bucket.

If you are in a warm climate you may as well give this a miss. It doesn't "Chill" the water it radiates the heat from the water. And if (like me) you are in a shop that's about 25 degrees, you'll be VERY lucky to get the water anywhere below that temp and if (like me) you have a CO2 laser this will cut back your lifespan of the laser as well as limit your ability to even make cuts in certain soft materials (other than say, cardboard) Perhaps if I was in the north or canada it would be fantastic (but only on cool days there too) I wound up rigging a small tabletop ice maker for less than half the money and got the temp down to 10c. If I hadn't trashed the box this would be going back.... as it is I'm not sure what I'm going to do with it, it's a semi heavy paperweight for now.

Initially when I received the chiller it would beep continually and not start. I troubleshot it and eventually contacted support. Through several back and forth they asked me to take the unit apart and check the components such as the pump. I took it apart and checked the components and connections. After messing around with them I got the unit working. Since then it works great. I use it on a K40 laser and even though it does not have a refrigerant, it cools the co2 tube just fine. I am overall happy with the unit after the initial frustration. The only other complaint is the water level indicator. It is an open-ended tube inside the case. If the unit is tilted water will spill out internally, and leak out of the bottom. It has not caused any issues after I got everything set up, but you need to be mindful when moving around with water in the tank.

Not a real chiller.

Absolute gamble on these units. If it doesn't work you are laying for return shipping which in my case is more than half the cost of the machine. Does not say that anywhere on their listings or policies.

no good

I use it for 30w laser engraver. For such power this is a good cooler. Water circulates quickly. Large volume of water. Therefore the temperature does not rise.

Purchased this for a Full Spectrum 45 watt laser to replace a plain old water pump. It works well to exchange the water and keep it right around room temperature. It isn't really a chiller because it doesn't really cool the water.