I plan on going on a longer than usual vacation this summer most likely for at least 3 weeks. My house has an inground sprinkler system; infloor hydronic heating system. My plan is to just leave the sprinkler system off, grass will come back. Infloor doesn't run in the summer any way. My main question is what to turn off, I was thinking shut off valves to toilet; washer; dishwasher; and sink faucets. My understanding is most leaks happen in these areas? For HWT tank that is gas, vacation mode; turn ignition for gas off (new tank has an auto ignition); turn off gas on tank itself and shutoff water to tank. I am on the correct track, if not set me straight. Normally we just go for a week and usually only put HWT in vacation mode and that's it. Thanks for any info.