Beat the Heat: Troubleshooting Your Air Conditioner Problems for a Cool Summer

Experiencing the sweltering heat of summer can be challenging without a dependable air conditioning system. Homeowners should ensure their cooling systems are up to the task for the upcoming warmer months. Knowledge about typical air conditioner problems and how to prevent them is invaluable in enhancing peace of mind and ensuring a comfortable environment throughout the season. This article discusses some of the most common ones.

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Common Air Conditioner Challenges Many Homeowners Experience

The following are several air conditioner problems to be aware of:

Air Conditioner Doesn’t Blow Cold Air

feeling hot due to weak air conditioner airflow

When your central air conditioner isn’t dispensing cold air, the air filter is a key aspect to inspect. A filter clogged with dirt impedes airflow through the system. This blockage can lead to a frozen condenser, diminishing the unit’s ability to cool effectively. To avoid such issues, adhere to a routine of regular filter replacements.

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Air Conditioner Is Not Turning On

If your air conditioner remains inactive, start by checking the circuit breaker for a trip and reset it. Also, inspect the plug for a secure connection and plug it back if it is loose. 

Dead thermostat batteries are another common culprit, so consider replacing them. If these steps don’t remedy the situation, contact a professional HVAC technician for a comprehensive diagnosis and repair.

Air Conditioner’s Exterior Unit Freezes

frozen air conditioning unit

Several factors can cause your air conditioner’s outside unit to freeze. It could be due to a low coolant level, often a result of a leak. Alternatively, extremely low outdoor temperatures can contribute to this issue. Problems with the blower motor or inadequate airflow are other potential culprits. Enlist the help of a skilled technician to diagnose and resolve the problem accurately.

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Unusual Noises From AC

While a soft humming sound is typical for an air conditioner, any unusual noises should be a signal for attention. Different sounds often indicate specific issues within the unit. Clicking noises may suggest problems with relays, whereas hissing could hint at a refrigerant leak. 

Rattling often stems from issues within the motor assembly, and buzzing sounds could indicate electrical faults. Expert HVAC contractors can usually diagnose the problem quickly upon hearing these distinct sounds from the air conditioning unit.

Keep your cool this summer by addressing common air conditioner issues before they arise. Contact Modern Comfort for expert HVAC services tailored to your needs.

Air Conditioner Refrigerant Leak

hvac contractor measuring AC refrigerant levels

Refrigerant is pivotal in your air conditioning system. In case of a leak, your AC may experience a decline in both performance and efficiency. Such leaks can lead to increased energy consumption, inconsistent cooling, and even freezing of the coils. 

Over time, they can also cause damage to the compressor. Scheduling regular inspections is critical to detecting and addressing refrigerant leaks early.

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Frozen Evaporator Coil

Continuous airflow is essential to prevent the evaporator coil from freezing. If you face this problem, inspect the air pathway for any obstructions. Potential causes include a faulty fan, obstructed vents, or dirty air filters. Implementing a routine of periodic cleaning and maintenance is the most effective way to avert such issues and ensure smooth operation.

Electric Control Failure in Air Conditioners

Air conditioners are designed for optimal performance under steady conditions. Frequent cycling can hasten the wear and tear of crucial components, particularly the compressor. Your AC unit’s fan and blower motor controls are also susceptible to this stress. Such conditions can lead to electric control failure, making the affected parts unresponsive.

Water Leakage in Air Conditioners

Condensation in the coils, especially on humid days, is normal. This moisture typically exits the unit through designated drain channels. However, if the drain channels meant to expel this moisture are blocked or damaged, it can lead to water leakage. Issues like blocked drain pipes, a broken condensate pan, or improper installation are common culprits. Often, simply cleaning the interior can effectively resolve the problem.

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Air Conditioner Drainage Issues

Inadequate drainage in an air conditioner can result in water stagnation within the unit. This creates an ideal environment for fungi and bacteria to thrive, potentially leading to unpleasant and unhealthy odors permeating your home. Regular professional inspections and maintenance are crucial in preventing these issues.

AC Unit Sensor Issues

Thermostat sensors are vital in monitoring room temperature, prompting the air conditioner to activate when it’s too hot and deactivate when it’s cool. Incorrect positioning of these sensors can result in inaccurate temperature readings. Technicians can adjust the placement of the sensors and perform necessary calibrations to ensure the air conditioner functions optimally.

Don’t wait until it’s too late to address air conditioner issues. Reach out to Modern Comfort for proactive maintenance and prompt repairs at affordable rates.

Easy Tips To Prevent Air Conditioner Issues

helpful tips for air conditioner efficiency

To prevent common air conditioner issues, here are some straightforward steps you can take:

Regularly Check & Replace the HVAC Filter

Dirty filters are a frequent source of air conditioner problems. Adhering to the manufacturer’s advice to replace air filters regularly is crucial for smooth operation. Typically, filters should be replaced every one to three months, but it’s wise to let their condition dictate the schedule. If the filters are clogged before the usual replacement time, it’s best to replace them immediately.

Clean the Air Conditioner Condensing Unit

The outdoor component of your air conditioner is vulnerable to accumulating dirt and debris. When the coils become dirty, their efficiency in transferring heat diminishes. Regular cleaning of the unit’s exterior surfaces can prevent this issue. Clear away any fallen leaves, twigs, trash, or other debris that might gather around the unit.

Ensure HVAC Vents are Unobstructed

Unhindered airflow through the vents is essential for optimal air conditioner performance. Occasionally, airflow issues are due to objects like curtains, furniture, or other items blocking these vents. Regularly monitoring and promptly adjusting the placement of such objects around vents can ensure consistent and efficient airflow.

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Upgrade to a Programmable Thermostat

Replacing outdated thermostats with newer, programmable models can enhance calibration and performance. These advanced thermostats allow you to set timers according to your preferred schedule and temperature, offering greater precision in temperature control and potentially reducing energy consumption. 

Stay ahead of air conditioner problems this summer with Modern Comfort’s trusted HVAC solutions. Contact us now for personalized service and a free estimate.


Proactively monitoring and regularly cleaning your air conditioning system are essential to prevent sudden failures, especially during critical times. Homeowners should maintain a consistent maintenance schedule for expert inspections and tune-ups. 

In case of repairs, promptly seeking professional HVAC technicians is crucial. Their specialized skills and experience are essential to accurately diagnosing and effectively resolving issues, ensuring your system runs efficiently at reasonable rates.

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Call Modern Comfort For Your Air Conditioning Requirements

Modern Comfort offers top-notch heating and cooling services in Central Maryland and Southern and Central Pennsylvania. Our team comprises highly skilled, certified technicians adept at delivering outstanding HVAC tune-ups, repairs, installations, and replacements. Each technician has extensive knowledge and experience to service your HVAC system efficiently and effectively.

We at Modern Comfort pride ourselves on providing the most competitive heating and cooling service costs in the region. Our maintenance services can assist in enhancing your comfort, boosting your system’s energy efficiency, and reducing your home cooling expenses. 

Should you require HVAC repair or a new system installation, we can recommend the most suitable options for your home, always considering your budget. We stand behind our work with a comprehensive satisfaction guarantee. Don’t hesitate to call Modern Comfort today for service appointments or a free, in-home estimate.

You can click here to contact us now or call us at (410) 429-7252 (MD residents) and (717) 489-3939 (PA residents) to find out more! Click the link to view our service area.

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