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When the temperature soars, an AC that blows warm air is the last thing you need. Do not ignore the problem and schedule professional residential air conditioning repair in Arlington as soon as possible. While you wait for your air conditioning repair contractor, Arlington to arrive, try to diagnose the problem yourself. If you’re successful, you can share your observations with the professional, speeding up the repair process.
Here are some common causes why an AC blows warm air.
Thermostat Issues
A faulty or malfunctioning thermostat may generate inaccurate temperature readings, causing your AC to blow warm air. Check your thermostat to make sure it is set to ‘COOL’. Also, ensure that the desired temperature is set lower than the current room temperature. In case the problem persists or you are using the right setting, try replacing the thermostat batteries.
Refrigerant Leaks
If a refrigerant leak has occurred or your AC is low on refrigerant, it may not blow cold air. Some other common signs (in addition to your AC not blowing cold air) of a refrigerant leak include hissing noises, long cooling cycles, and high electricity bills. A refrigerant leak can cause the humidity level in your home to increase. Do not try to handle refrigerant yourself as you’re likely to make a mistake that could lead to refrigerant poisoning. Have a professional look into the problem.
Dirty or Clogged Filters
AC filters trap airborne particles in the air. Over time, they can become clogged and may fail to serve their purpose. Clogged filters can cause your AC to work harder and longer and may lead to unclean air being circulated in your home. AC filters should be replaced every 60-90 days to prevent airflow problems. If you have a seasonal allergy, consider replacing your filters sooner (probably every 30-45 days depending on the age of the unit and how long you run your AC everyday).
Frozen Evaporator Coils
The most common cause of evaporator coils freezing over is insufficient airflow (commonly caused by clogged air filters, or a dirty evaporator coil). When your evaporator coil freezes, it can’t absorb heat effectively. Frozen evaporator coils can affect other parts and should be checked by an HVAC contractor. The professional will first turn off your AC and wait for the ice to thaw before addressing the underlying problem.
Condenser Unit Problems
If your outdoor unit becomes obstructed by debris, dirt or plants, its ability to dissipate heat can be affected. To prevent cooling problems, make sure the outdoor unit is clear of obstructions and clean the fins regularly.
Electrical Issues
Electrical issues can disrupt the power supply to your AC, causing the unit to blow warm air. Check the electrical panel and replace blown fuses or reset tripped circuit breakers.
Compressor Problems
The compressor is the heart of your AC. It compresses refrigerant vapor and circulates the refrigerant through the system. If your compressor isn’t working properly, the unit may blow warm air.
Ductwork Issues
Leaks or gaps in your ductwork can cause warm air from the attic or crawlspace to mix with conditioned air, and your AC may blow warm air. Your contractor will inspect your ductwork for leaks and seal leaky ducts with sealant.
Old AC Unit
Even well-maintained air conditioners aren’t supposed to last a lifetime and will need to be replaced once they have reached the end of their useful life. If your AC is on its last legs, and you continue using it, the unit may struggle to cool your home and blow warm air. Replacing an old AC may be a better option than repairing it.
Blocked Air Vents
Furniture and curtains can block your air vents restricting airflow. Airflow problems can cause your AC to blow warm air. Make sure all your vents are unobstructed.
Incorrect AC Size
If you have an undersized AC (it is too small for your house), the unit may fail to cool your living space and blow warm air.
AVS Heating and Air Conditioning is one of the most reliable air conditioning repair companies, Arlington. We target the root causes of AC problems. To schedule commercial air conditioning repair, Arlington, call (703) 457-9028.
