Guide for Reuse, Repair, Recycling, and Safe Disposal
for Alameda County, Contra Costa County, and the City of Palo Alto

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Mercury Thermostats

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.

Household Hazardous Waste

This item should never be put in a curbside bin. For more information visit our household hazardous waste page.

In the old style of thermostats with a lever or switch - not the newer electronic kind - there is mercury inside the sealed glass tilt switch.

Properly recycling mercury thermostats is the law. Use the Thermostat Recycling Location Finder to find free drop-off sites near you. Residents, contractors, and businesses all qualify for rebates of up to $30 per mercury thermostat.

Vendors

Vendor Address City Destination Disposal Method Notes
SMaRT Station 301 Carl Rd Sunnyvale Recycle Free Drop-off This item is hazardous and must be disposed of properly. Thermostat collection area.
R.E. Michel Company 2921 Whipple Rd Union City Safe Disposal Free Drop-off, Buyback Drop-off Thermostat Care Drop-off Location. Free drop-off, complete form, rebate mailed at future date.

Curbside Service

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