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A lot of houses still have mechanical mercury thermostats. yeah, the houses that have heat. ask an HVAC guy about the new digital thermostats. I'm not even tal
by linksnapzz 5y ago
A lot of houses still have mechanical mercury thermostats.
yeah, the houses that have heat. ask an HVAC guy about the new digital thermostats. I'm not even talking about the Nest etc. smart home ones, just the basic new digital ones that croak after three years. Keep the mercury-switch ones as long as you can.