Is it harmful to turn on the air conditioner at idle speed for a long time?

Turning on the air conditioner at idle for a long time will increase fuel consumption and the formation of carbon deposits in the engine.

Matters needing attention in turning on the air conditioner of a car are as follows: Turn off the air conditioner switch: Before stopping the engine, turn off the air conditioner switch (refrigeration switch) and turn on the maximum gear of the blower. Keep the air conditioner dry: turn on the air conditioner on sunny days after rainy days to keep it dry and avoid mildew. 3. Air volume: Blow frequently to keep the air conditioning system clean.