[krisroadruck]

I wish HN had a forum signature like function so I could just put a "all of my comments written through the lens of living in the United States".

Most US dishwashers require you to hook up to hot water supply line. Problem is since they only use a gallon or two of water, if you don't run the tap first you are very likely feeding it lukewarm water. There are indeed heating elements but they don't get the water up to temp immediately - so starting things off already hot tends to help.