Customer had us out today for a backed up sink in the master bath. AC condensate line is tied into this sinks drainage and caused the blockage. Ran hand top and cleared blockage. Filled and drained sink multiple times to test for functionality and leaks, everything is working as it should at this time. No warranty on drain cleaning. Recommended to customer to fill the sink with hot water and drain it once a week in the summer and once a month in the winter to help keep the line clear. They should do this in addition to using bio one. Also, customer wanted pricing on replacing the pop up assembly in both sinks and to replace cartridges on the other sink in the master bath.