My new, energy efficient dishwasher has its water supply connection on the back side of the unit – not underneath. The unit is installed against a well-insulated (perhaps not as much as I think) outside wall; yet with outside temperatures below freezing for days at a time here in Delaware, I am finding the water in the supply line freezes! I can only run the dishwasher when the outside temperature is above freezing or, if below freezing, when the morning and early afternoon sun heats up the east side of house where my dishwasher is. The national chain where I bought the unit and the local firm they contracted for the installation have been no help.
The supply line from under my kitchen sink (adjacent to the dishwasher) to the back of the dishwasher is a flexible hose with braided stainless covering. I am concerned that the repeated freeze/thaw cycle will weaken the hose and it will eventually fail. For that reason, I keep the water supply turned OFF when the unit is not in use.
Does anyone who has tackled a similar problem have any ideas for a lasting solution?