The part that you are looking for is called a probe. You can order the part directly from Primo. Call them at 866-429-7566. They are open from 10:00 A.M. to 6:00 P.M (ET). Give them the model number for your water dispenser, and they can ship it to you. The price for the probe ranges from $2.99 to $4.99, depending on which model you have.