Asked by: Teodolinda Hesslerhome and garden smart home
Are mercury thermostats accurate?
Last Updated: 27th February, 2020
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Keeping this in consideration, what replaced mercury in thermostats?
There are certainly still thermostats around with Mercury switches attached to bi-metal coils, but they have been replaced with electronic devices with an electronic sensor, a bit of digital logic, and either a solid state or mechanical relay.
Subsequently, question is, is mercury still used in thermostats? Thermostats with mercury will have the “Hg” sign for mercury on the packaging. Most thermostats sold today don't contain mercury. Programmable electronic thermostats and many manual thermostats are now mercury-free.
Hereof, how do I know if my mercury thermostat is bad?
Remove the thermostat cover and look at the mercury bulb while turning the dial; the bulb should rotate as the dial is turned. The drop of mercury should move and make contact with the wire contacts as the temperature selector is turned up.
How long do mercury thermostats last?