Do water filters help in ice making machines? Well yeah. Believe it or not municipal water does have some impurities in it as it hits your tap. Water freezes at 0 degrees UNLESS there are impurities in it then it needs a lower temperature to freeze. So now what happens: well first it takes longer…more power used. Then it slowly eats away the evaporator causing it to take even longer to freeze. The evaporator is one of the most expensive parts to replace on an icemaker. Our icemakers have an extended warranty option when Ice-O-Matic water filters are used So sure water filters help. We sell them so call Surety Refrigeration at 314 638 8683 today