Customer explained how system was not working. Furnace set to 72F on thermostat. It was 74F in house. Verified that everything on furnace functions like it should. Found that the 2nd level zone damper motor is not working properly. It was stuck in a closed position. This will cause system to heat and cool unevenly. 2nd level zone damper should be replaced. Main level damper has already been updated. Also would recommend replacing old main level thermostat. Mercury thermostats can sometimes be anywhere from 5-7 degrees off of what it should be. Lastly our sunshine club maintenance plan will get the best price for repair. Customer will review findings with family member and call back if they would like to move forward.