Household Hazardous Waste
This item should never be put in a curbside bin. For more information visit our household hazardous waste page.
A control device typically used in a heating and/or cooling system to maintain a set temperature. Older models contain liquid mercury and are considered hazardous waste. Newer models are electronic and considered electronic waste when non-working.
In the old style of thermostats, not the newer electronic kind, there is mercury inside the sealed glass tilt switch. Properly recycling mercury thermostats is the law.
Residents, contractors, and businesses all qualify for rebates of up to $5 per mercury thermostat. There are 350+ collection sites in CA. Find the nearest one and claim rebates here.
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