Using air conditioning (AC) continuously in a new car is not inherently harmful. Modern car AC systems are designed to handle continuous operation without causing significant damage to the vehicle. However, there are some factors to consider:
Fuel Efficiency: Running the AC in a car consumes fuel, and this can have a small impact on the vehicle's overall fuel efficiency. In hot weather or when driving at high speeds, the AC's energy consumption can be noticeable, leading to a slight decrease in fuel economy.
Engine Load: Operating the AC puts an additional load on the engine, especially in older or less powerful vehicles. This extra load can affect the engine's performance, but modern cars are designed to handle this additional load without causing any major issues.
Cooling System Maintenance: The AC system is connected to the car's cooling system, and prolonged use may increase wear on certain components. Regular maintenance, such as checking refrigerant levels and cleaning the condenser, is necessary to keep the AC system functioning optimally.
Battery Performance: Using the AC when the car is idling can put more strain on the battery, which may lead to a slight reduction in battery life over an extended period. However, this impact is generally minimal, and a well-maintained car battery should handle the load without significant problems.
In summary, running the AC continuously in a new car is generally safe and won't cause significant harm. However, it's essential to maintain the vehicle properly and follow recommended maintenance schedules to ensure that the AC system and other components continue to operate efficiently. If you're concerned about fuel consumption or wear on certain components, you can moderate the AC usage or utilize the car's ventilation system to reduce the strain on the cooling system and engine.