Air Conditioner Not Blowing Cold Air But Running: Expert Insights

Jennifer Foster • July 6, 2024

An air conditioner that doesn't work correctly is intolerable, especially during summer. In some cases, it happens the other way around: an AC unit will run yet blow out little or no cold air. When your air conditioner is not blowing cold air, the reason for such a problem can either lie in simple or complex root causes that may need professional attention. Such issues are more accessible to diagnose and probably fix if you know what could be wrong or when the time calls for experts to get their hands dirty. Here are some expert insights into why your air conditioner might not be cooling your home.

Here are the reasons why your AC is not cooling

Clogged Air Filters

AC Not Cooling

Clogged air filters are the most common reason for failing to blow cold air in an AC. The dust and dirt keep on settling at the top of the filter with continuous usage, thereby reducing its flow. Second, reduced airflow may cause the evaporator coil to freeze, preventing your AC from cooling the air effectively.

Clean or replace your air filters to maintain proper workflow for maximum efficiency. Fenwick Home Services recommends doing homework to learn how to change the air filters before trying them.eased back into your home. Here is what it does mainly:

Refrigerant Leak or Malfunctioning Thermostat

AC Not Blowing Cold Air

The refrigerant cools the air that the AC unit draws. The refrigerant level is lower in system leakage and does not cool as efficiently. Other signs indicating a refrigerant leak are hissing noises, ice growth on the refrigerant line, and a visible loss in cooling performance.

Likewise, a faulty thermostat misleads your AC about the temperature and might need to cool more efficiently. Ensuring your thermostat is calibrated correctly and working will fix this problem.

Dirty or Blocked Condenser Coils

AC Unit Not Blowing Cold Air

The compressor and coils are the chief components that produce cold air for your air conditioner. Defective parts impede the proper cooling of your air conditioner. Frozen coils are among the most prevalent issues; dirty air filters restricting airflow or low refrigerant levels could cause this. Routine maintenance tasks such as replacing air filters and checking refrigerant levels can help prevent these problems.

Faulty Compressor

Air Conditioner Not Cooling

An air conditioner not blowing cold air can also be caused by a faulty compressor, characterized by the absence of cold air or other strange noises from the equipment. Proper maintenance that ensures improved ventilation and monitoring of electrical systems should avoid compressor malfunction. Cleaning blocked condenser coils and their surroundings is essential for effective heat exchange, which is crucial for your AC to work well.

Blocked or Leaky Ducts

AC Stopped Cooling

If the air conditioner stops blowing cold air, some minor but common issues could be involved, such as leaky ducts, unit freezing due to excess ice buildup, or even a faulty fan. In the former case, leaky ducts can cause uneven cooling and high energy bills. Suspicious symptoms might include rooms warmer than usual or an abundance of dust. Then, inspect your ducts for any damage and seal holes using duct tape or mastic sealant to raise system efficiency.

Consult an expert if the air conditioner shows signs of extensive damage or mold. Regular checking every few months will prevent more significant problems from arising, and the HVAC performance will ensure optimal cooling and cost savings.

Electrical Problems or Frozen Evaporator Coils

Air Conditioning Unit Not Blowing Cold Air

Other causes that can stop your air conditioner from blowing cold air are electrical problems. They include faulty wiring, tripped circuit breakers, and AC internal circuitry faults. Another major problem is a frozen evaporator coil. The coils cannot absorb heat when frozen, throwing out warm air. Some common causes for coil freezing include low refrigerant levels, restricted airflow, and malfunctioning blower fan.

What to Do if Your AC is Still Blowing Warm Air

If your AC is still blowing warm air after checking these common issues, you know it's time for professional help. Self-attempts to fix complicated problems make the system prone to more damage, costing you even more in the long run.

For residents in the Temecula area, KJ's Heating and Air is the trusted, professional, yet highly affordable AC repair and maintenance contractor. They specialize in diagnosing and repairing various air conditioning problems to help keep your home cold and comfortable. Their expert team can ensure your AC unit runs at peak performance, from simple routine maintenance to extensive repairs.

Regular maintenance can prevent many of the problems discussed here. Setting up annual check-ups with KJ's Heating and Air will help discover the problem early and keep your HVAC running well. They provide all-around services, from cleaning air filters to checking refrigerant levels, assessing ductwork, and ensuring all components work at par.

The reasons an air conditioner may not be blowing cold air despite the motor running include everything from clogged air filters to as severe as a faulty compressor. Once you understand what could happen, you are better equipped to act. Professional help is needed most of the time for complex issues.

KJ's Heating and Air offers reliable solutions at reasonable prices to keep your AC unit in top condition. You don't want a faulty air conditioner to ruin your summer; call upon KJ's Heating and Air for professional services today.

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