Mercury Thermostat Reduction and Recycling

Many older or less expensive thermostats have switches that contain mercury. To minimize the potential for accidental spills or releases of mercury to the environment, DNR is promoting the recycling of used mercury-containing thermostats. DNR also advocates their replacement with mercury-free electronic thermostats that make it easier to conserve energy.

Household Thermostat Recycling Fact Sheet

• Information for homeowners and others [PDF] about options for recycling mercury-containing thermostats.

Pledge Program for HVAC Businesses

DNR invites heating, ventilation, and air conditioning (HVAC) businesses to join us in partnership to promote the goals of the mercury thermostat reduction and recycling project. Participating wholesalers and contractors receive public recognition for their voluntary efforts.

• Brochure for HVAC Contractors [PDF 73KB]
• Brochure for HVAC Wholesalers [PDF, 75KB]
• Participating Businesses updated 01/22/04

Results (as of mid-2003)

• 22,904 thermostats containing mercury collected by TRC from Wisconsin
• 173 pounds of mercury recycled by TRC from Wisconsin (estimated)

NOTE: A significant amount of mercury from thermostats has undoubtedly been collected and recycled by entities other than TRC, but DNR does not have records to estimate the amount.

For more information, contact:

Randy Case
(608) 267-7639
Charles.Case@wisconsin.gov