Re: water heaters: mine is natural gas; I've found that the "vacation" setting is quite enough especially since the only time I want really hot water is for the shower; I turn the thermostat up until it clicks, then return it to "vacation" and give it about 5 minutes... voila! The water is hot as can be and I'm pretty sure that nightly "kick" is the only time it fires up, unless I do laundry. One short cycle every 24 hours- not bad. Got me one of them "instant on" heaters but I didn't have to go buy one.
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