We were told by the builder to leave the a/c on set at 82 to avoid mold and humidity problems. He has left empty houses set at this for a year at a time and never had a problem. We told our lawn service to send our service receipts to our northern home address for the four months we are gone. We have neighbors just keep an eye out for anything unusual. A friend has a key. It works fine. Our next-door neighbor, who can only come down for 2-6 weeks at a time, pays $100/month for a house watch, and frankly, we are always picking up for her around her house--poa newspapers, packages, those lawn thingies the landscapers plant in your yard when they fertilize, phone books, etc. I swear I don't know what exactly they do, but she feels good with it, so we don't say anything.
That's my take. We leave the water on. What's to freeze?
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