If your air conditioning (AC) system is blowing hot air after recharging it with a refrigerant fix, there could be several reasons for this problem. Let's go through some common issues that might be causing the hot air to blow:
Improper refrigerant recharge: Recharging the AC system with the wrong type or amount of refrigerant can lead to inefficient cooling or even damage to the system. Each AC system is designed to work with a specific type and amount of refrigerant, and using the wrong one can result in poor performance.
Refrigerant leak: If your AC system was low on refrigerant before the recharge, it's possible that there is a refrigerant leak in the system. Simply adding more refrigerant without fixing the leak will only provide a temporary solution, as the refrigerant will eventually leak out again.
Air in the system: Air can get trapped in the AC system during the recharge process, causing the system to work inefficiently. Air can prevent the proper flow of refrigerant and hinder the cooling process.
Faulty compressor: The compressor is a crucial component of the AC system. If it is not functioning correctly, it won't circulate the refrigerant properly, leading to inadequate cooling.
Clogged expansion valve or orifice tube: These components control the flow of refrigerant into the evaporator. If they are clogged, the refrigerant might not be able to enter the evaporator coil properly, resulting in reduced cooling.
Electrical issues: AC systems are also controlled by various sensors and switches. Electrical problems with these components can lead to improper functioning of the AC system.
Other mechanical issues: There could be other mechanical problems within the AC system that need to be diagnosed and fixed by a professional technician.
To resolve the issue, it's essential to have the AC system inspected by a qualified automotive technician or HVAC professional. They have the necessary tools and expertise to diagnose the problem accurately and make the appropriate repairs. Attempting to fix complex AC issues on your own can lead to further damage or injury, so it's best to leave it to the experts.