I use this product to cool the wart of my beer. I have to admit it exceeded expectations! With my ground temperature water, it was able to cool down 6 gallons of 210 degree wort to 65° in under 5 minutes. I couldn't believe it! This thing got it done so fast it was ridiculous. Highly recommend it. Be aware of that you have to be very fastidious in your cleaning after cooling your wort.