The Plano hot season lasts 3.5 months, from June 3 to September 17, with an average daily high temperature above 87°F. These days, your AC may start blowing warm air instead of the refreshing cool air you are used to. This can happen for many reasons, and trying to know the exact problem might be difficult and frustrating.
In this situation, Plano AC repair experts are there for you. This article will walk you through some of the possible reasons your AC is blowing warm air and even provide you with some practical solutions so you can continue enjoying a cool and comfortable atmosphere in your home.

Low Refrigerant
Low refrigerant is the first, most obvious, and common reason your AC is blowing warm air. A refrigerant is an important requirement for an AC unit to work properly. Creating refrigerated air from the AC is crucial.
It achieves this through absorbing humidity and heat from the air, which leaves it feeling cold. Unfortunately, this problem is not something you can handle on your own; it requires the assistance of a professional repair team like https://www.airviewac.com/ac-repair-plano-tx/ because the issue has many potential causes. First, it might be a leak that needs to be fixed, or the refrigerant needs a replacement, or the unit itself might have a fatal flaw that results in the problem. Whichever the situation is, contacting a professional will fix the problem.
Clogged Filters
Filters are another area that, if they are not working properly, can lead to problems. The work of the filters is to prevent debris and other materials from entering the AC system. However, along the way, they can get clogged with the same debris and dirt they are preventing from entering. When there is decreased airflow through the system, the AC unit will have to work harder and less efficiently.
This will cause the air to never cool enough, and eventually, warm air will start blowing through the vents. Fortunately, this issue can be easily fixed; in most situations, all you need to do is replace the filters with new ones, which you can even do yourself.
Just keep in mind that it’s essential to change the filters regularly if you want to prevent this problem from happening again. Most AC units require new filters at least every three months. Check the product manual for recommended filter replacement and the intervals to do so.
Wrong Thermostat Setting
Human error can also lead to you experiencing unusual warmth from your unit. Sometimes, homeowners believe that they have set the system to cool, but in reality, they haven’t. This may be considered a small mistake, but in reality can lead to confusion and frustration when the air coming out of the vents remains warm.
Thankfully, the issue can be easily fixed; simply check the thermostat to know what it’s saying. To keep your home cool, set it to cool, not warm, or fan. Additionally, you should set the temperature low to make a difference. If this is not the issue, pressing a few buttons can resolve the problem.
Frozen Evaporator Coils
Sometimes, certain parts of the system become too cold, specifically the evaporator coil is a victim of this problem. When there is no proper airflow, air will build up around them and make them less effective, If this occurs, the coils will not provide the necessary coolness as they are supposed to. Call a professional service to do a maintenance checkup, they will be able to catch this issue before it gets worse and can also fix the problem.
Outside Unit Has Lost Power
In certain situations, the unit’s inability to produce cold is not the fault of the system, instead, it’s a failure of another system that affects it. When the unit on the outside of an AC system loses its power, it stops providing cold air while the internal system continues to blow air around, mistakenly thinking that it’s cooled by the outside unit.
This issue can be overlooked, especially if the power loss is localized to the outside unit. In this case, you may still have power inside, but the outside remains off. Unfortunately, a power outage is not the first thing that comes to mind when diagnosing this issue.
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Duct Leaks
Sometimes, the AC can make the room warm even when the unit itself is running fine. This is due to something happening down the line. Duck leaks can prevent your home from getting cold by preventing the AC unit from freezing. The leak will allow warm air to mix into the vents and even enable the cold air to escape, and this will make the whole process ineffective.
Conclusion
Your AC is a vital component of making staying at home worthwhile, especially in Plano’s summer. But things can go wrong along the way, and your AC may start blowing warm air. This can happen due to many reasons, including clogged filters, duct leaks, frozen evaporator coils, low refrigerant, and many more.
Some of these problems, like clogged filters, are things you can handle yourself, but others you have to contact a repair team to diagnose the actual problem and provide a solution.
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