(Last Updated: 8/18/2021)

Older wall-mounted thermostats may contain mercury, which is hazardous to human health. Do not put these in the garbage. Take to a free drop-off recycle site.
To check if your thermostats contains mercury, remove the front cover. This photo shows the inside of a thermostat containing mercury.
Newer, programmable thermostats can be disposed as garbage.
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