Why Your Air Conditioning Unit Isn’t Cooling: Common Causes and Solutions


Troubleshooting Potential Issues

When your air conditioning unit isn’t doing its job, there could be several reasons behind it. Below is a list of common issues and potential fixes before you call an air conditioning repair company.

Thermostat Issues

Improperly set thermostats can throw off your AC’s performance. Make sure it’s set to “cool” and the temperature is lower than the current room temp. If your thermostat is unresponsive, check the batteries. Sometimes it needs a simple replacement. If that doesn’t work, it might be time to get a professional in to take a look.

Airflow Problems

Dirty air filters often block airflow, leading to ineffective cooling. Replace those clogged filters regularly. Blocked vents can also be a hassle. Ensure all vents are open and not covered by furniture or curtains. Don’t forget to check for leaky ducts—they can lose cool air, making your unit work harder than it needs to. Sealing any leaks can really make a difference.

External Unit Issues

A dirty condenser unit won’t efficiently release the heat it absorbs. Clean any debris around the outside unit. It’s also important to remove objects or vegetation that might obstruct the condenser. Proper airflow around your unit ensures it works efficiently.

Refrigerant Problems

Low refrigerant levels usually indicate a leak. Look for ice buildup on the coils—it’s a tell-tale sign. Listen for hissing sounds and if you detect any, it points to a possible leak. This isn’t a DIY fix; call a professional to handle refrigerant leaks.

Electrical Issues

Tripped circuit breakers can shut down your AC. Head to your electrical panel and reset any tripped breakers. Faulty wiring can also cause disruptions. I advise against DIY efforts here—it’s best to call a professional for major electrical repairs to ensure safety.

Frozen Evaporator Coils

Several factors like dirty filters, low refrigerant, or airflow problems can freeze up the evaporator coils. If you notice ice on the unit, turn it off to let it thaw. While it’s off, check and address the underlying issues to prevent it from happening again.

General Home Maintenance

Never underestimate the impact of sealing windows and doors. Properly sealed windows and doors can prevent warm air from sneaking in and straining your AC. This small step can improve your unit’s efficiency a lot.

We’re here to help you maintain a comfortable home. If the troubleshooting tips above don’t solve your issue, don’t hesitate to reach out to our team at Rapid Response Heating & Cooling for expert service.

When to Call a Professional

If you’ve tried troubleshooting and your AC still isn’t cooling it’s time to call in the pros. Rapid Response Heating & Cooling can diagnose and fix those tricky issues that aren’t obvious. Regular maintenance from a professional can prevent many of these problems from happening in the first place. Don’t let a malfunctioning AC ruin your comfort—reach out to an expert and get your cool air flowing again. Remember a well-maintained AC unit not only cools your home efficiently but also saves you money in the long run.

If you are in need of service, or would like a free estimate, contact us now by submitting an online service request, or by giving our office a call at 615-656-8300

Frequently Asked Questions

Why isn’t my air conditioning unit cooling properly?

Your AC may not cool due to thermostat issues, clogged filters, refrigerant leaks, or issues with the external unit. Regular maintenance can help you identify and solve these problems.

How can I troubleshoot thermostat issues with my AC?

Check if the thermostat is set to “cool” mode and the temperature is correctly adjusted. Replace batteries if necessary and ensure it’s not exposed to direct sunlight which can affect the reading.

What should I do if there’s no airflow from my AC vents?

Inspect and clean or replace air filters if dirty. Check for blockages in the vents and ensure the external unit is not obstructed by debris.

How can external unit issues affect my AC’s performance?

External unit problems, such as dirty coils or blocked condenser units, can hinder heat dissipation. Make sure the unit is clean and has adequate space around it for proper airflow.

What are the signs of refrigerant problems in an AC?

Signs include hissing noises, reduced cooling efficiency, and ice formation on the refrigerant lines. These issues typically require professional repair and handling.

How do electrical issues impact my air conditioning unit?

Faulty wiring, tripped circuit breakers, or damaged capacitors can disrupt your AC’s function. Ensure all electrical connections are secure and consider consulting a professional for repairs.

Why do evaporator coils freeze, and how can I prevent it?

Frozen coils often result from restricted airflow or low refrigerant levels. Prevent freezing by regularly changing air filters and ensuring refrigerant levels are adequate.

How important is regular maintenance for my AC unit?

Regular maintenance, like cleaning filters and checking refrigerant levels, ensures your AC operates efficiently and prolongs its lifespan. Schedule annual professional servicing for optimal performance.

When should I seek professional help for my AC problems?

Seek professional help when DIY troubleshooting doesn’t resolve the issue, for refrigerant handling, or if you encounter electrical problems. Rapid Response Heating & Cooling offers expert services for these needs.

Looking for an HVAc Professional in Brentwood, TN?

We are the right choice for all your HVAC needs! Here at Rapid Response, we understand that no two customers are the same and that is why our team of trained professionals will go above and beyond to meet the customized cooling needs of every customer. By choosing us you will receive fair rates, quality work and outstanding service.