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Why Is My AC Blowing Warm Air?

Why- Is My- AC- Blowing- Warm Air

Imagine the scorching heat of Dubai is knocking at your door after the winter season, and suddenly you find yourself with AC warm air blowing issue. This can be considered one of the worst nightmares for a person living in Dubai. Therefore, experts always advise paying attention to regular AC maintenance. Otherwise, you might face a similar scenario at your home or workplace. However, there is no need to fear as the sole purpose of this article is to make you aware of the potential reasons behind this issue. Moreover, it is to guide you through the steps to resolve it.

Check your Thermostat Settings

One of the most common mistakes people do they set the thermostat to “cool” mode but the fan to “on” mode. The reason is that many people aren’t aware of the AC cooling intervals. What are AC cooling intervals? The times when your AC is actively working with the evaporator coils to cool down the air inside your home. It happens when you set your thermostat to a lower temperature, and the AC’s compressor kicks in to remove heat from the indoor air. Thus, your air conditioner provides you with a cool, refreshing breeze. Once the desired temperature is reached, the AC breaks until the indoor temperature rises again. Therefore, the solution is to set your thermostat to “cool” mode and fan to “auto” mode. The “auto” mode only allows the AC to circulate cool air when actively cooling, whereas the “on” mode continuously blows air.

Outdoor Unit Power Loss

You can only get cool air with a properly and effectively functioning outdoor unit. An outdoor unit is responsible for cooling the air before it enters your home. However, you won’t get any cool air if the outdoor unit loses power due to a blown fuse or tripped circuit breaker. Therefore, AC maintenance services in Dubai check all the components thoroughly during maintenance sessions. They inspect your AC circuit breakers and fuse panels to ensure the outdoor unit receives power. Thus, they resolve all such issues before such happenings.

Low Refrigerant Levels

Refrigerant is the lifeblood of your AC system. They are a vital component that facilitates the heat-cold exchange necessary for cooling your home. However, if you face low refrigerant levels, your AC unit will start blowing warm air. Remember, this is not something that you can handle. Therefore, always contact a reputable AC maintenance company in Dubai. Low refrigerant levels are usually caused by leaks in the system and lead your AC to blow warm air. Professionals can instantly fix refrigerant leaks, ensuring your system runs efficiently and effectively.

Dirty Evaporator Coils

Evaporator coils play a significant role in cooling your indoor environment. However, the maintenance negligence on your part regarding AC maintenance can make evaporator coils dirty. Once these coils get covered in dirt and debris, they become ineffective. Thus, they stop functioning correctly, and your AC starts blowing warm air. Therefore, you should always hire AC evaporator cleaning Dubai services to prevent this issue. This way, your air conditioner will keep running at its peak performance.

Problems with the Thermostat

We discussed above how incorrect thermostat settings can force your AC to throw warm air. However, you should know that even if you set your thermostat correctly, it can still be the culprit behind your AC’s warm air blowing. The reason is the thermostat malfunctioning. Therefore, ensure that your thermostat’s batteries are working, and if you have a zoned system, check all thermostats for conflicting settings.

A Clogged Line and Water Build-up

You must have noticed that AC units usually drain water outside your home. This happens because your AC unit removes moisture from the indoor air during cooling. The moisture collects in the form of water in the evaporator coils. Finally, this water drips down into a condensate pan. Now the water drained through a condensate line to the outside of your home. However, over time, dust, dirt, algae, or debris can accumulate in the condensate line, causing it to become clogged. When the pipe is clogged, the water cannot correctly drain, leading to water build-up in the condensate pan and potential leakage. Therefore, you should immediately contact air conditioning service experts under such circumstances. The possible leakage triggers a safety mechanism that shuts down the AC compressor. Regular air conditioning maintenance, including cleaning condensate lines, can prevent this problem.

Dirty Air Filters

Air Filters are another essential AC component. Not only that, they keep your indoor environment cool but save you from a lot of respiratory issues and diseases. However, clogged air filters with dirt and debris cannot function effectively. Consequently, your indoor environment becomes a pollutant, and the temperatures rise. Regularly AC servicing and changing your air filters is essential to maintaining proper airflow in your AC system. Clogged filters can lead to restricted airflow. Thus, dirty air filters cause the system to overcompensate and potentially shut down. Replace air filters every 30-60 days, depending on your climate and household conditions.

Restricted or Malfunctioning Compressor

The compressor is a vital component of your AC system that you should always pay attention to. Moreover, hiring AC condenser coil cleaning Dubai professionals is essential to ensure your AC compressor stays healthy. Dirty condenser coils hinder the cooling process and lead to warm air blowing from the AC. Regular outdoor unit cleaning and maintenance can prevent this issue and improve system performance.


In conclusion, a malfunctioning AC blowing warm air can make your sanctuary uncomfortable. However, understanding the potential causes and taking proactive measures can save you from this nightmare. Regular AC maintenance, cleaning, and professional inspections are vital to keep your cooling system running efficiently.

If you cannot resolve the issue or need expert assistance, don’t hesitate to contact trusted HVAC professionals like Repair Plus in Dubai. Their experienced team can diagnose and fix any AC-related problems, providing peace of mind and a well-functioning air conditioning system to keep your home cool and comfortable all summer. Stay calm and beat the heat with a fully operational AC unit!

Book an Appointment

To book Ac services in Dubai with Repair Plus Call us at 800-70-247


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