Within the first 60 seconds of the power outage tonight, one of the neighbor's car alarms went off. That put me a little on edge at first. Your in-laws' neighborhood sounds like my neighborhood.
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What makes a lot of sense is having your gas-fired furnace wired so you can attach a small generator to it to power its thermostat and fans through a power outage. This makes more sense that going to the trouble and greater expense to wire up a larger generator connection for all of your home's power with a full blown transfer switch.