Title. We keep ours at 75F, parents do 77F, and in laws 68F. It made me curious what everyone else keeps theirs at?

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[โ€“] 23 points 3 years ago (4 children)

Not American. What's a thermostat?

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  • [โ€“] 13 points 2 years ago (1 child)

    The electronic thing on the wall that controls the temperature of your heater or air conditioner.

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  • [โ€“] 7 points 2 years ago (1 child)

    older ones are often electrical, but not really electronic. they use a bimetal strip that bends due to changing temperatures, to complete a circuit at the point you set the slider. it's actually a really fascinatingly simple bit of tech.

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  • [โ€“] 3 points 2 years ago (1 child)

    Mine growing up used a bit of mercury in a sealed vial mounted to that bimetallic strip.

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  • [โ€“] 1 point 2 years ago (2 children)

    any idea what the mercury was for? something about getting the heat in and out of the strip faster maybe?

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  • [โ€“] 3 points 2 years ago

    The Mercury is in a glass tube with two wires and the tube is attached to the bimetallic strip in such a way that the motion of the Mercury due to gravity as the strip moves will close the circuit between the two wires. The Mercury is just being used a liquid conductor.

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  • [โ€“] -3 points 2 years ago (1 child)

    Google search would have answered that.

    It's what controls the furnace or air conditioner in your house. That way you can control how hot or cold your house is.

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