I have a tenant that constantly sets the thermostat at 90 degrees for the heat. I have told her several times to stop because she will burn the unit up. What are the consequences of this and how long will it take for me to notice problems with the unit?

  • 2
    Is it a gas or electric unit? Who pays the gas/electric bill?
    – Tester101
    Commented Mar 5, 2015 at 23:13

1 Answer 1


For a correctly installed and maintained furnace, the only consequence is slightly reduced combustion efficiency. That is well within the range of temperatures furnaces are designed to endure.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.