Troubleshooting Guide: Why Your AC Is On But Not Cooling

When the summer sun blazes high in the sky, and the Texas heat becomes almost unbearable, your air conditioner is your saving grace. But what happens when your AC is running yet feels like it’s just blowing warm air into your home? It’s a frustrating situation that no one wants to deal with. Don’t let the heat get the best of you; let’s find out what’s causing the issue and how to fix it.

Thermostat Troubles

Let’s dive straight into the first potential culprit: the thermostat. It’s incredible how a small device can create big cooling problems. If your thermostat malfunctions, it may not accurately sense the temperature or send the right signals to your AC.
Troubleshooting Tip: Start by checking if your thermostat is set to the right temperature and is set to “cool.” If it’s a digital thermostat, ensure the batteries are working correctly. If your thermostat is outdated or problematic, it might be time for an upgrade.

Dirty or Clogged Air Filters

One of the most common reasons for reduced cooling efficiency is dirty or clogged air filters. When your filters are blocked, your AC has to work harder to push cool air through, which can lead to insufficient cooling.
Troubleshooting Tip: Replace your air filters regularly, ideally every one to three months, to keep your system running smoothly. Dirty filters not only hinder cooling but can also affect your indoor air quality.

Refrigerant Leaks

Low refrigerant levels due to leaks frequently cause inadequate cooling. When your AC is low on refrigerant, it can’t cool the air effectively, leaving you with a warm and stuffy home.
Troubleshooting Tip: Contact a professional immediately if you suspect a refrigerant leak. This issue should not be ignored, and fixing it requires the expertise of a certified technician.

Blocked or Dirty Condenser Coils

Your AC’s condenser coils are located outside and are responsible for releasing heat from your home. If these coils are dirty or obstructed, your AC can’t expel heat efficiently.
Troubleshooting Tip: Regularly check and clean your condenser coils. Remove debris, leaves, and dirt that can accumulate around the unit. Ensure at least two feet of clearance around the condenser for optimal airflow.

Frozen Evaporator Coils

Believe it or not, your AC can freeze in the middle of a blazing summer day! Frozen evaporator coils can’t absorb heat effectively, leading to insufficient cooling.
Troubleshooting Tip: If you notice ice buildup on your evaporator coils, turn off the AC and let the ice melt. Once it’s completely thawed, consider the possible causes, such as low refrigerant, dirty filters, or poor airflow, and address them accordingly.

Electrical Issues

Electrical problems can manifest in various ways, including reduced cooling efficiency. Faulty wiring, malfunctioning capacitors, or a broken fan motor can hinder your AC’s performance.
Troubleshooting Tip: Electrical issues are best left to the professionals. Attempting to fix electrical problems without the proper knowledge can be dangerous. Contact an experienced technician to diagnose and repair electrical issues.

Inadequate Insulation

Poor insulation can cause your home to heat up quickly, making it difficult for your AC to maintain a comfortable temperature.
Troubleshooting Tip: Check for gaps or areas with insufficient insulation in your home. Sealing these areas and adding insulation can improve your AC’s efficiency.

Leaking Ducts

Leaking air ducts can result in losing cooled air before it reaches your living spaces. This can lead to a noticeable decrease in cooling performance.
Troubleshooting Tip: If you suspect duct leaks, have a professional inspect your ductwork and seal any gaps or cracks. Properly sealed ducts can significantly enhance cooling efficiency.

AC Unit Size and Age

Lastly, consider the age and size of your AC unit. An outdated system may struggle to cool effectively, while an improperly sized unit might not be powerful enough to keep your home comfortable.
Troubleshooting Tip: If your AC is old or incorrectly sized, consider an AC Replacement in Cypress, TX, with us. Newer, more efficient models can offer better cooling and energy savings.

The points mentioned above serve as your roadmap to addressing these concerns. However, should you ever require professional assistance, remember that Valliere Air Conditioning & Heating, LLC is only a phone call away, ready to provide expert solutions.