Any Energy Star air conditioner will sip power, and have a positive effect on your electricity bill.
An air conditioner in a car uses quite a bit of power. It is not unusual for a car to hesitate when the AC comes on.
Yes, it uses power and this power must be generated by the motor using more petrol.
No it uses little power
The air conditioning uses up the battery power.
The A/C uses R-134A refrigerant.
I suggest that you put your air conditioner on low or use the fan on the air conditioner because it uses less energy. Another thing you could do is take a regular fan and put in the window to get air flow.
the most expensive ones
This item uses an AC/DC power adapter
The desktop would, I would think, as it is bigger and has more space for that kind of power. This is correct but not for that reason (desktops are mostly empty space). Laptops are designed to use low power and be portable so they uses more expensive parts that use less power.
Dry Mode is a function that will reduce the humidity in the room. In this mode, as the air passes through the air conditioner the humidity will condense on the evaporator so that the air comes out drier. Reducing the humidity makes you feel cooler and more comfortable. Dry mode uses less power than cool mode.
Anything that uses electricity
A PC uses less power than a TV