My air conditioner is set on 75 and does keep our home cool but it never cuts off. If I move up to 90 it will cut of. It does not kick kick on and off as other air conditioners we have had in past. Coleman in the brand name. We are worried about our bill due to this.
Thank you,
Melissa

Possible thermostat badly out of calibration, most can`t be fixed, and need to be replaced