If the air coming out of the AC vent is icy cold, but the room doesn't seem to cool enough, there might still be an issue with your air conditioning system. A few possible reasons for this problem include:
Insufficient Cooling Capacity: The air conditioner might not have enough cooling capacity to handle the size of the room or the heat load in the space. If the AC unit is undersized for the area it's trying to cool, it will struggle to maintain a comfortable temperature.
Poor Insulation: If the room has inadequate insulation or there are air leaks around doors, windows, or other openings, the cool air from the AC can escape, and warm air from outside can enter the room. This makes it challenging for the air conditioner to maintain the desired temperature.
Airflow Issues: The cold air from the AC needs to circulate effectively throughout the room to cool it evenly. Blocked or dirty air vents, clogged filters, or issues with the air ducts can impede proper airflow and reduce the cooling efficiency.
Thermostat Placement: The thermostat's location can influence how the AC functions. If the thermostat is placed in an area that receives direct sunlight or near a heat source, it might misread the room's actual temperature and not cool the space adequately.
Refrigerant Leak: A refrigerant leak can reduce the AC's cooling capacity, even if the air coming out of the vent is cold. If there's a leak, the system might not have enough refrigerant to absorb and release heat effectively.
Compressor Issues: Problems with the AC compressor, such as a faulty motor or electrical component, can impact the cooling performance.
Dirty Evaporator Coil: Even if the unit has been cleaned, it's possible that the evaporator coil (located inside the indoor unit) is still dirty or blocked, hindering the cooling process.
If you've already had your AC serviced, and the problem persists, it's essential to have a qualified HVAC technician inspect your system again. They can perform a comprehensive check to identify any underlying issues and make the necessary repairs or adjustments.
To help troubleshoot, you can also check for any visible obstructions around the vents, ensure that the thermostat is set to the correct temperature and mode (cooling mode), and verify that all doors and windows are closed when the AC is running. But for a proper diagnosis and resolution, professional assistance is recommended.