No. An air conditioner operates with a condenser which circulates the air past refrigerant-filled coils, which thereby allows it blow out cold air. They have no ability to heat.
Yes, it happens all the time.
22 degrees
yes
make -15 change to +15 and add 68= +83degrees
Its a change of 300
+89 degrees
The change is 7 Celsius degrees (NOT degrees Celsius).
140
Yes, it does not change any function of the the air conditioning or the temperature at which it disperses air, it just runs longer to get to the temperature you set it at. If it runs longer though it will cost you more.
An increase of 12 degrees.
It is an increase of 16 degrees.
20 degrees Celsius is 68 degrees Fahrenheit. 45 degrees Celsius is 113 degrees Fahrenheit. So 25 degrees change Celsius = 25 x 1.8 = 45 degrees Fahrenheit. 1 degree change in Celsius is equivalent to 1.8 degrees change in Fahrenheit. Scroll down to related links and look at "Conversion of Temperature Units".