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Old 11-16-17, 01:36 AM   #3
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If they come out clean, they're clean.

If you have really long hot water lines you might actually be wasting energy if its hooked up to the hot line, you'll just be heating the water line while the water going into washer will just be cold, just like you described.

Tankless system should be turning on almost as soon as there is demand; might be worth it to shutoff the hot water to hand-washing taps to prevent excessive cycling. There might be a setting where you can adjust this, I've never owned one.

You might also consider turning on the hot only when you are going to take a shower, and keeping it off all other times. You can get similar performance to tankless with regular tanked systems, if you heat it judiciously like this on a timer or just manually on-off, you do want to use small capacity tanks if you are doing this tho.

I think using air dry vs heated dry is where you save a ton of energy on dishwashers.
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