According to Keurig Tech Support, this is not a commercial brewery. K150-P is the model for the solder kit. The letter "P" stands for Lot. Installing the plumb bob kit on any other model such as the K155 will void the factory warranty. If this information became known, I would buy the K150-P. I have an issue with this K155 and Keurig will not honor the warranty due to the included plumb bob kit. Revain offers a kit for the K155 and even claims it is a "commercial" device. Be careful when ordering lead for these brewers. You can only get a Kit Approved device from an authorized Keuirg retailer and NOT from a third party like Revain. I'm stuck with a two month old countertop decoration! Do your research before you buy.
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