Jun 19

10 Reasons Why Your AC Unit Isn’t Blowing Cool Air

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Home cooling systems are essential for ensuring a comfortable and healthy living environment in hot weather. They help regulate temperature and humidity, but like any mechanical system, an air conditioner may encounter issues like when an AC unit isn’t blowing cold air. Take prompt action when this happens to avoid discomfort, health risks, and costly HVAC repairs. By recognizing the significance of cooling systems and the potential consequences of AC malfunctions, you can proactively maintain optimal performance and ensure your comfort.

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10 Reasons Why Your AC Unit Isn’t Blowing Cold Air

Here are quick tips to help you identify the issue if your AC isn’t blowing cool air. We will also cover ways to resolve the problem efficiently.

Related Article: Smoke Coming From Vents When AC Is On

Incorrect Thermostat Setting

image of homeowner adjusting programmable thermostat

An AC unit will only turn on when the room’s temperature surpasses the thermostat control setting. Set your thermostat to “auto” and “cool” to ensure it activates when needed. The first step is to set the thermostat to the correct temperature. Sometimes, the problem may occur if the thermostat is set to “heat” instead of “cool.”

There could have been an accidental adjustment if you recently received air conditioner service. Switch the thermostat to “heat” before resetting it to “cool.” Wait a few minutes and check your registers to see if any cold air is blowing through.

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Dirty Air Filter

Regularly checking and replacing HVAC air filters is crucial. If you neglect this task, the filters can become significantly clogged, obstructing the airflow into your home. This can harm other components of the air conditioning unit, such as the evaporator coil.

When the filter is congested, it won’t filter out airborne particles, which can result in increased dust, a general feeling of stuffiness, and a lack of cold air. To avoid this, inspect your air filter every 30 days and clean or replace it as needed.

Related Article: Why Is My Air Conditioner Running In Short Bursts?

Clogged Condenser

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If your central air conditioner is blowing warm air, a dirty or clogged condenser coil may be the culprit. During operation, the condenser fan pulls air through the outdoor unit’s condenser coil to extract the heat energy from your home. However, the coil can become obstructed with dirt, grass, and other airborne particles, limiting airflow between the fins. This can result in decreased energy efficiency, system failure, or compressor damage from overuse.

Always clean the condenser coil to remove dust and grime. You can brush away debris, use a brush attachment to vacuum the coil, or gently rinse it with a hose. For a more effective solution, seek assistance from a certified heating and cooling specialist.

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Mechanical Problems

As with most things, cooling units experience normal wear and tear over time. Therefore, mechanical problems may occur during the system’s lifespan. Knowing how your AC operates can help prevent potential mechanical issues from happening.

Be sure to inspect your thermostat and air filter regularly. If your air conditioner isn’t functioning properly or running for the expected duration, contact your HVAC expert immediately. Schedule an inspection of your system’s internal components to guarantee that everything is in good shape.

Related Article: 5 Most Common Thermostat Problems Impacting Your Comfort

Refrigerant Leak

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If your central AC system is not producing cool air, it can be due to an HVAC refrigerant leak. Refrigerant, such as R410a, is a crucial cooling agent that helps create cold air in the AC unit. It moves through the indoor and outdoor coils, changing from liquid to gas, absorbing heat energy and humidity from indoor air, and releasing it outside.

Normally, refrigerant levels in the system do not decrease unless there is a leak in the refrigerant lines. When this happens, there won’t be enough coolant to create cold air. Attempting to repair refrigerant leaks on your own is not advisable. Refrigerant is a regulated chemical that can only be handled by certified professionals. Your HVAC specialist has the necessary equipment to detect and fix refrigerant leaks. They can also recharge the coolant, ensuring your home stays comfortable and cool.

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Ductwork Leak

When there’s a leak in the ductwork, the cold air will seep into the walls before it reaches the vents. This means the same thing will happen with your heat during the winter.

Identifying a leak in the ductwork can be challenging. It can deprive you of the cold air you’re paying for and result in costly repairs. Reach out to a trusted HVAC professional to address this issue.

Related Article: How To Keep Your House Cool Naturally

Evaporator Coil Issues

air conditioner coil

The evaporator coil is a vital indoor component of your air conditioning system. It removes heat energy and humidity from the air. If refrigerant levels in the system are insufficient, the coils may freeze, resulting in frost buildup. This can lead to reduced cold air production and increased energy costs.

Accessing the evaporator coil can be challenging if you are not a professional. Leave this issue to an HVAC expert.

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Blocked HVAC Vents

An obstructed or blocked vent can cause similar problems to a clogged or restricted air filter. The vents are responsible for bringing air into the HVAC system and distributing cold air throughout the house. Any blockage can create issues for the air conditioning system.

If there is an obstruction near the vent, the room with the affected vent may feel warmer than other parts of the house. Contact your trusted cooling technician right away to address the issue.

Related Article: Top 6 Benefits Of Getting An Annual Air Conditioner Tune-Up

Undersized Air Conditioner

image of an outdoor air conditioning unit

AC units are usually sized based on their BTUs, which is their cooling capacity. Undersized AC units can cause problems, such as struggling to keep you cool as the outdoor temperature rises. This can result in your unit working harder, leading to increased wear and tear and, potentially, the need for premature replacement.

If you have an inadequate air conditioner, one option to consider is a ductless mini-split installation service, which can cool specific hot spots in your home. However, replacing your central air conditioner with an appropriately sized unit is the best solution.

Related Article: Why Is HVAC Airflow So Important For My Home?

Lack of Regular Maintenance

Scheduling an annual tune-up or maintenance service is the best preventative step to make sure that your air conditioner cools your home effectively. Regular maintenance lowers your energy bills and detects current and potential issues with your air conditioner.

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It can be incredibly frustrating when your air conditioning system does not work correctly, particularly during the hot summer months. There are several reasons your cooling unit may not perform well, ranging from simple issues like clogged filters and malfunctioning thermostats to more complex problems such as refrigerant leaks and compressor failures. Always hire a certified HVAC technician to diagnose and address the problem.

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Skylands Energy Service is the leading provider of heating and cooling services throughout Central New Jersey. Our team comprises highly skilled and certified technicians specializing in HVAC tune-ups, repairs, installations, and replacements, delivering top-quality services to all our clients.

At Skylands Energy Service, we recognize the importance of having a comfortable and energy-efficient home. We offer competitive pricing for our services. Our maintenance services are designed to improve comfort and reduce energy bills, while our knowledgeable technicians can recommend the best HVAC repair or replacement option that fits within your budget. We stand behind our professional work and provide a satisfaction guarantee.

To schedule a service appointment, call Skylands Energy Service, and take advantage of our free in-home estimates to assist you in making informed decisions about your HVAC systems. With Skylands Energy Service, you can trust that you will receive exceptional heating and cooling services exceeding your expectations.

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