Customer called in about not having water to her fridge after we serviced her furnace the other day. Upon arrival, customer stated that after we left the other day, humidifier started running water like crazy and got all over her furnace. Customer shut the water off to humidifier which also ties into her fridge line. Was able to disable humidifier and turn her water back onto fridge. Customer will be leaving for extended period of time before end of day. Informed customer that would recommend turning water off to house if leaving more than a couple of days to prevent any unexpected water line leaks or breaks anywhere in the house.