Does the AC use a lot of energy from the engine?
Operating the A/C system definitely demands more energy from the engine and electrical system. Whether it’s a lot depends on how hot you are and how much you’d like to be cool!
Seriously, it can require approximately 5 horsepower to turn an A/C compressor. A little more electricity is also required when operating the A/C and blower fan, so the alternator works harder. That also requires more energy from the engine.
A frequently overlooked factor is the fact that driving with A/C turned off usually means the windows are open, making the vehicle less aerodynamic. At highway speeds, a vehicle with the A/C on and the windows closed is more aerodynamic, thus consuming less fuel pushing through the air.
A few facts that can assist us in getting the best fuel economy and conserving energy while operating a vehicle. Should you run into any problems with your cooling system, feel free to reach out to a professional mechanic who can fix up your air conditioning system at your convenience.
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