Honestly, please save yourself the trouble. I have had the worst experience with Waterlogic.. worse than any company i've ever worked with. They want to thank their engineers and Sophie in Customer Service because if it wasnt for them, we certainly wouldn't be using them anymore. Not only did they send our wrong parts, old parts, and their sales person Zoey didn't give us any indication that we needed a co2 cannister or the correct sizing - we cant seem to get hold of them for love nor money. Honestly dont do it. Thank you Sophie for answering the phone and actually working.