BLUF:[Hot Air] People attempting to lower the temperature setting on newer heating and cooling systems received a very "Big Brother" style message on their digital displays. It read (in part), "Temperature locked temporarily due to energy emergency. Due to a rare energy emergency that may affect the local energy grid, your temperature slider has been changed... since 4:00 pm." The message went on to explain that the override was a result of the user’s participation in the "Colorado AC Rewards Program."