Can you ruin a car engine by running the air or heat while sitting in one place for an extended period of time?
Idling with the air conditioner or heat on for an extended period of time will not damage your car. However, it is important to keep in mind that idling for long periods of time is generally not recommended, as it is unnecessary and can waste gas. Idling for long periods can also lead to other issues, such as premature battery wear and buildup of carbon deposits in the engine. Therefore, it is best to avoid idling for long periods of time, regardless of whether or not the air conditioner or heat is on.