Top 5 AC Repair Mistakes Homeowners Make in Houston, TX

Living in Houston, TX, means relying heavily on your air conditioning system to keep your home comfortable year-round. However, many homeowners make common mistakes when it comes to AC repair and maintenance. These mistakes can lead to inefficiency, higher energy bills, and even costly repairs. Let’s dive into the top 5 AC repair mistakes and how you can avoid them.

Ignoring Regular Maintenance

Importance of Scheduled Maintenance

Regular maintenance is crucial for keeping your AC system running smoothly. Just like your car needs regular oil changes and tune-ups, your AC system requires periodic check-ups to ensure it operates efficiently. Scheduled maintenance can help identify potential issues before they become major problems, saving you time and money in the long run.

Consequences of Neglecting Maintenance

Neglecting regular maintenance can lead to a host of problems. Your system may become less efficient, resulting in higher energy bills. Over time, the lack of maintenance can cause parts to wear out faster, leading to costly repairs or even the need for a complete system replacement. Additionally, a poorly maintained AC system can negatively impact indoor air quality, leading to health issues for you and your family.

DIY Repairs Without Proper Knowledge

Risks Involved in DIY Repairs

It’s tempting to tackle AC repairs yourself, especially with the wealth of information available online. However, DIY repairs without proper knowledge and experience can be risky. You might accidentally damage the system further or even injure yourself. Electrical components and refrigerant handling are particularly dangerous without the right tools and training.

When to Call a Professional

Knowing when to call a professional is essential. If you’re experiencing issues like inconsistent cooling, strange noises, or high energy bills, it’s best to reach out to a qualified AC technician. Professionals have the expertise to diagnose and fix problems efficiently, ensuring your system is safe and functional.

Using Incorrect Air Filters

Types of Air Filters

Air filters come in various types, including fiberglass, pleated, and high-efficiency particulate air (HEPA) filters. Each type has different capabilities in terms of trapping dust, pollen, and other airborne particles. Choosing the right filter for your AC system is crucial for maintaining good indoor air quality and system efficiency.

Choosing the Right Filter for Your AC

Using the incorrect air filter can restrict airflow, making your AC system work harder and less efficiently. Check your system’s manual or consult with a professional to determine the appropriate filter type and size. Regularly replacing or cleaning your filters is also essential to keep your system running smoothly.

Neglecting to Check Thermostat Settings

Proper Thermostat Settings

Your thermostat plays a vital role in your AC system’s performance. Setting it correctly can significantly impact your system’s efficiency. Aim for a comfortable yet energy-efficient temperature setting. For instance, during the summer, setting your thermostat to 78°F when you’re home and higher when you’re away can help reduce energy consumption.

Impact of Incorrect Settings on AC Efficiency

Incorrect thermostat settings can cause your AC system to overwork, leading to higher energy bills and potential system strain. If you have a programmable thermostat, take advantage of its features to create a schedule that aligns with your daily routine. This can help maintain optimal temperatures without unnecessary energy use.

Blocking Air Vents and Registers

Importance of Unobstructed Airflow

Proper airflow is essential for your AC system to function efficiently. Blocking air vents and registers with furniture, curtains, or other objects can disrupt airflow, making your system work harder to cool your home. This can lead to uneven cooling, increased energy consumption, and potential damage to your system.

How to Ensure Proper Airflow in Your Home

Ensure that all air vents and registers in your home are unobstructed. Keep furniture and other items away from vents to allow for unrestricted airflow. Additionally, regularly check and clean your vents to prevent dust and debris buildup, which can also impede airflow.


Maintaining your AC system is crucial for ensuring comfort and efficiency, especially in a hot climate like Houston, TX. By avoiding these common mistakes—ignoring regular maintenance, attempting DIY repairs without proper knowledge, using incorrect air filters, neglecting thermostat settings, and blocking air vents—you can keep your AC system running smoothly and efficiently. Remember, when in doubt, it’s always best to consult with a professional to ensure your system is in top shape.


How often should I schedule AC maintenance?

It’s recommended to schedule AC maintenance at least once a year, ideally before the start of the cooling season. Regular maintenance helps ensure your system is running efficiently and can help prevent unexpected breakdowns.

Can I perform any AC maintenance tasks myself?

Yes, there are some tasks you can perform yourself, such as regularly replacing or cleaning air filters, keeping the outdoor unit free of debris, and ensuring vents are unobstructed. However, more complex tasks should be left to professionals.

What type of air filter should I use for my AC?

The type of air filter you should use depends on your AC system and your specific needs. Check your system’s manual or consult with a professional to determine the appropriate filter type and size.

How do I know if my thermostat is working correctly?

If your thermostat is not maintaining the set temperature, is unresponsive, or shows incorrect readings, it may be malfunctioning. You can try replacing the batteries or resetting the thermostat, but if issues persist, consult a professional.

What should I do if I accidentally block an air vent?

If you accidentally block an air vent, remove the obstruction as soon as possible to restore proper airflow. Keeping vents unobstructed is crucial for maintaining efficient system operation.