Off-peak electricity pricing, not wanting to wake/disturb others with noise, not wanting to consume too much hot water before the rest of the house showers or uses the clothes washer...
Yep, it's just a dial that lets me delay up to 12 hours lol. Overengineered hackable electronics. I'd rather than cost go into a more sturdy unit made of better materials. My dishwasher is 20 years old and works fine. The owner of the house before me said he did have one of the timer replaced at some point.
