What is heating and airconditioning process?
What is the different types of AC?

Heating can be done with a heating element, a flame(gas), Hot water or liquid are 3.
Best way to describe Air Conditioning, is If you Ever Filled a Dive Tank, or a compressor tank from a compressor, you notice it gets warm or hot. When you open the valve a release of pressure causes it to get cold. So On a House the Compressor is outside, and the outside coils get warm and the outside fan will try to get rid of that heat.
Inside the House Air Handler, The High Pressure is relieved and moves through coils, getting cold and the blower send cool air through the house.
I hear Air Conditioning people say it doesn't cool your house, it removes the heat.
I disagree and say it cools the house. I won't argue.
And as with weather warm air holds more moisture than cool air, if a clouds hit a cold front and when cooled, it drops the rain.
Air Conditioners do the same thing, as the warm is cooled it drops the water drains outside.
Their will be a Trap on this drain for 2 reasons, bugs, and with water in the trap, in won't suck air through drain pipe. (Cooling the outside)