Some INFINITI QX80 owners report experiencing issues with their air conditioning blowing hot air, which may indicate a freon leak. Recharging the freon is often recommended as a first step to restore the cooling capacity of the system, and it can be done easily with a DIY AC recharge kit through the low-pressure port. Many refrigerants also contain a leak sealer that can help address small leaks during the refill process. However, if the AC continues to blow hot air after recharging, owners may need to consider other potential problems, such as a faulty blend door actuator or a clogged condenser. Understanding the workings of the air conditioning system can also help diagnose the reasons behind the hot air issue.
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