no, actually, it takes fuel to use the a/c. Another thought ... with the windows closed, there is less air drag, which then makes the car more aerodynamic.
Because the air conditioning compressor, is run from a pulley off of the engine. This puts an additional load on the engine, which causes more fuel to be used.
Air Conditioning is a unit connected to the engine... when ac on, it connects to power from the engine to make it operate... it uses power making the engine work harder, consuming more gas. I've heard from research that driving less that 50mph(or 40 i think) with windows down is more fuel efficient.. while driving 40 or 50mph + and having the ac on is more fuel efficient.. because of drag from wind.
The air conditioning system was efficient for the size of the home.
The most efficient and cost-effective apartment air conditioning units on the market are typically window air conditioners and portable air conditioners. These units are easy to install, energy-efficient, and generally more affordable than central air conditioning systems. It's important to consider the size of your apartment and the cooling capacity needed when choosing the right unit for your space.
You can only get gas heating and air conditioning. The gas heating and air conditioning is less because it uses less gas then how much water you would be using. The electricity for the heater and AC can be fairly cheep.
At highway speeds yes, in city driving no.
Currently Friedrich offers the most choices in energy efficient air conditioning
oil, air, hydraulic, fuel, air conditioning,
To cool more than two rooms it is economically more efficient to purchase a central air conditioning unit than a wall unit. Wall units are individually cheaper than central air, but if you have to buy more than two, then it is better to buy the central air unit.
Yes, it is not efficient to have the air conditioning on while the windows are open because it can waste energy and increase electricity costs.
It changes the flow of air over the ends of the wings making the plane more fuel efficient.
They have changed to be more comfortable with heating in the winter and air conditioning in the summer. They have changed to be more efficient in fuel consumption and more safety features to protect riders. Buses used to only have doors for emergency exit. Now more windows can be pushed out safely for use as emergency exits,