What to Do When the Car Air Conditioner Isn't Cooling Well?
2 Answers
If your car air conditioner isn't cooling well, here are the solutions: 1. First, check if the air vent temperature is normal. Typically, the air vent temperature should be around 10 degrees Celsius. If it's higher than 13 degrees Celsius, it indicates poor cooling performance, which may be due to low refrigerant levels in the air conditioning system. In this case, simply recharge the system with refrigerant. 2. If the air vent temperature is normal, the most likely causes are a dirty air filter or evaporator. When these components become dirty, the airflow decreases. To fix this, replace the air filter and clean the evaporator. Additional Information: To recharge the car air conditioner with refrigerant, connect the refrigerant gauge to the air conditioning system and perform a vacuum process, choosing low-pressure vacuuming. Generally, there's no need to monitor the negative pressure value during vacuuming—three minutes of vacuuming is sufficient. After the time is up, tighten the low-pressure gauge switch and proceed to connect the refrigerant canister for refilling.
My air conditioner wasn't cooling well a while ago. First, check if the cabin air filter is too dirty. When I opened the glove compartment and took out the filter, it was full of leaves and dust. After replacing it with a new one, the airflow improved significantly. Also, check the condenser fins. Last time at the car wash, the technician said mud buildup could affect heat dissipation. Cleaning it thoroughly with a water gun from the inside out made a noticeable difference. If these aren't the issues, it might be low on refrigerant, and you'll need a professional shop to check with a pressure gauge. Don't add refrigerant yourself—if there's a leak in the system, it won't help no matter how much you add. If the compressor is failing, it may make strange noises, and this requires dashboard removal for repair. Driving without AC in this extreme heat is unbearable, so address any issues as soon as possible.
