Do you have to run a hot water line to a dishwasher

The dishwasher will not clean very well without hot water almost a waste of time. Even the ones with a heating unit will not have time to bring cold water up to effective temp.

Most dishwashers will run on either hot or cold. You will find the new models are most cost effective to run on cold water, they just take longer to complete the cycle check the manual for the manufactures recomendationDISCLAIMERAll advice is given with-out seeing the job, and hence all advice MUST be taken as advice with limited knowledge on the exact situation. NO responsibility can or will be taken. And yes, I am a licensed plumber with my own business in Brisbane Australia