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I'll be leaving a home vacant in the Houston, TX area when the average high is in the mid 90s and humidity is high. I have a few questions regarding "summerizing" my home to prepare:

  1. All heating appliances (furnace, stove, water heater) are gas. Do I need to shut off the gas to the entire house?
  2. Should I drain and shut off the water heater completely or just turn the temperature way down?
  3. What temperature should I leave the air conditioner set to? Or should I change it periodically (I have a 7-day programmable thermostat)?
  4. Should I shut off the water in general? If so, any additional prep for faucets/showers/toilets/fridge?
  5. I plan to leave the fridge on, should I just leave it as is or let it run at a higher temperature?
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    5 - lousy plan. Clean it throughly, turn it off, prop the doors open.
    – Ecnerwal
    Jan 21, 2018 at 17:47
  • Can you please explain why it's lousy to leave the fridge on? Jan 22, 2018 at 19:54
  • You'll be wasting electricity for "a few months" running an appliance that does not need to be run, adding more heat to your home for the A/C that you'll be running to remove, so you get to pay for it twice on any day that's hot enough to run the A/C. If it's cleaned and propped open, it costs nothing, and it will be cold in an hour or two when you return to the house, turn it back on and close the doors.
    – Ecnerwal
    Jan 23, 2018 at 16:53

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  1. No need to shut off the gas just turn down all thermostats.
  2. No need to drain tank, set stat to vacation.
  3. Leave this at 80*
  4. Yes, close main supply valve
  5. Reduce this setting a bit. Add several jugs of water to fill space. Will reduce cycling.

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