Sure seems to be a lot of Fahrenhate here... Hey, look at it this way - the more granular Fahrenheit degrees (roughly half (5/9) a Celsius degree) are more useful for determining comfort - including setting a thermostat: I've had a couple of European cars that clearly used degrees Celsius for their setpoint (even if displaying degrees F, usually skipping by twos). Way too often, it simply wasn't possible to set the AC comfortably - it was either too warm or too cool. This matters in Texas...