Most thermostats sold today donâ€™t contain mercury. Programmable electronic thermostats and many manual thermostats are now mercury-free. Honeywell makes a round thermostat that doesnâ€™t contain a mercury switch that looks exactly like the older mercury-containing thermostat.
Two types of thermostats typically do not contain mercury switches:
For new thermostats, check on the package. Thermostats with mercury will have the â€œHgâ€ sign for mercury on the packaging.
For thermostats in use, take off the cover and look inside. If there is a glass ampoule (or ampoules) containing a silvery substance, the thermostat contains mercury.
Mercury-free thermostats are just as reliable and easy-to-use as those that contain mercuryâ€”and they conserve energy. These thermostats are widely available.
For more information contact Taylor Watson, Health and Environmental Investigator, at firstname.lastname@example.org.