What is the best way to dispose of an old mercury thermostat? By ProMatcher Staff Updated: 08/01/2016 Get Free Quotes Today! Answer: Take to your local hazardous waste facility Construct Boss Get Free Quotes Today! Find Local Pros Free Thermostat Repair or Reprogram Cost Estimates Related Questions How Often Should I Have My Central Air Conditioner Serviced?Top answer: Every year Can I have central air if I have baseboard heat?Top answer: In most cases Do central air conditioners need to be covered in the winter?Top answer: No Can central air run on natural gas?Top answer: In some cases Can central air be installed without a furnace?Top answer: Yes, always