When the heat of summer rolls in, there is nothing more refreshing than being welcomed home by the cool air blowing from your AC. However, it will not feel as good if your air conditioner is blowing warm air, right?
Whether you are dealing with a central unit or a window air conditioner unit only blowing warm air, it is crucial to address the problem quickly, not just for your comfort but for the general upkeep of your home. Here are some reasons why your air conditioner might be blowing warm air and tips on fixing the issue.
Why Is My Air Conditioner Blowing Warm Air?
It could be something simple like a dirty air filter or a more complex issue like a refrigerant leak or malfunctioning compressor. Understanding the root cause of the problem is key to finding a solution. Below are some of the most common culprits of an air conditioner that blows warm air.
1. Dirty Or Clogged Air Filters
One of the most common reasons an air conditioner blows warm air is because the air filter is clogged with dust and debris. A dirty filter restricts airflow, making it harder for the system to cool the air properly. The system may start blowing warm air instead of cool air when airflow is limited.
2. Refrigerant Leaks
Air conditioners rely on refrigerant to cool the air. If there is an AC refrigerant leak, the unit will not be able to cool the air effectively. In this case, you may notice that your air conditioner blows cold then warm air, as it struggles to maintain a cool temperature.
3. Faulty Compressor
The compressor is responsible for circulating refrigerant throughout the system. If the compressor malfunctions, it can prevent the refrigerant from moving properly, causing the system to blow warm air. A damaged or faulty compressor often requires professional repair or replacement.
4. Thermostat Issues
Sometimes, the issue is not with the air conditioner itself but with the thermostat. If the thermostat is faulty or incorrectly calibrated, it may cause the system to blow warm air. A thermostat that does not read the temperature correctly can lead to improper cooling settings.
5. Clogged Condensate Drain
If the condensate drain is clogged, it can cause water to back up and affect the performance of your air conditioner. This issue could lead to various problems, including the system blowing warm air.
6. Overheating
If your air conditioner is overworked or not properly maintained, it may overheat and struggle to cool the air. It can happen when the unit is running continuously without a break or if the coils are dirty.
How To Fix An Air Conditioner Blowing Warm Air? 7 Steps!
Check the filters, coils, drain, thermostat, and refrigerant levels. Keep in mind that some problems may require professional help, especially if the cause is more complex. But here are some AC troubleshooting tips and tricks you can take to keep your central air conditioner from blowing warm air.
1. Check And Replace The Air Filter
If your AC is blowing warm air due to a dirty air filter, start by checking the filter and replacing it if necessary. Air filters should be changed every one to three months, depending on usage. A clean filter improves airflow and allows your system to cool the air more efficiently.
2. Inspect The Refrigerant Levels
If you suspect a refrigerant leak, you may need to call a professional to check the refrigerant levels. AC troubleshooting for refrigerant leaks involves finding and fixing the leak and then recharging the system with the appropriate amount of refrigerant. Refrigerant leaks should only be handled by certified technicians.
3. Examine The Thermostat
Make sure that your thermostat is set to the correct temperature an AC should blow and mode (cooling mode). If it is not calibrated properly, the air conditioner may not function correctly. You can also try replacing or resetting the thermostat's batteries to see if that solves the problem.
4. Clean The Condensate Drain
If the condensate drain is clogged, use a wet/dry vacuum or a pipe cleaner to remove the blockage. A clean drain guarantees proper water flow and prevents moisture buildup that can affect the air conditioner's performance.
5. Inspect The Outdoor Unit
If you have a central air conditioner, ensure that the outdoor unit is clean and free of debris. Dirt and leaves can obstruct airflow, leading to poor performance. Clean the AC coils and remove any obstructions to improve airflow and cooling efficiency.
6. Replace The Compressor
If your compressor is faulty, it may need to be replaced. It is a more costly repair and requires professional assistance. A malfunctioning compressor will prevent your air conditioner from cooling effectively, so it is important to address this issue as soon as possible.
7. Consider Professional Maintenance
Regular maintenance is essential to keep your air conditioner running smoothly. Professional technicians can perform a thorough inspection of your system, clean the coils, check the refrigerant levels, and identify any underlying issues before they become major problems.
Therefore, if your air conditioner is blowing warm air when it should not be, call a homeyou expert to learn the HVAC system cost so that you and your air conditioner keep cool all summer!
