What maintenance tasks can I do myself for my AC in Houston?

Maintaining your air conditioning system in Houston is essential to ensure it runs efficiently, especially during the hot and humid summer months. While some tasks should be left to professionals, there are several maintenance activities homeowners can do themselves to keep their AC units in top condition. Regular DIY maintenance can help prolong the lifespan of your system, improve its efficiency, and prevent costly repairs. From changing filters to cleaning coils and checking refrigerant levels, these straightforward tasks can make a significant difference. Here’s a guide in which Irob-Tech LLC assist you on essential DIY maintenance tasks that can help you keep your AC unit running smoothly in the sweltering Houston heat.

Regularly Change the Air Filter

One of the simplest yet most effective maintenance tasks you can perform on your air conditioning (AC) unit is regularly changing the air filter. Air filters play a critical role in maintaining the efficiency of your AC system and ensuring good indoor air quality. In Houston, where air conditioning is heavily relied upon due to the hot and humid climate, a clean air filter is essential.

To maintain optimal performance, it’s recommended to check your air filter every month and replace it every 1-3 months, depending on the type of filter and usage. During peak usage periods, such as summer, you may need to replace the filter more frequently. Replacing the filter is usually a straightforward process: locate the filter compartment, remove the old filter, and insert a new one, ensuring it fits snugly.

Clean the Coils

The evaporator and condenser coils of your AC unit play a vital role in the cooling process. Over time, these coils can accumulate dust, dirt, and other debris, which can hinder their ability to absorb and release heat effectively. This can reduce the efficiency of your AC system and potentially lead to overheating or system failure.

Cleaning the coils is a task that can be done periodically to ensure your AC unit operates efficiently. Start by turning off the power to the unit to ensure safety. For the indoor evaporator coil, you may need to remove some panels to access it. Use a soft brush to gently remove dust and dirt from the coil. For more thorough cleaning, you can use a vacuum cleaner with a soft brush attachment.

Clear Debris Around the Outdoor Unit

The outdoor unit of your AC system needs adequate airflow to function efficiently. Debris such as leaves, grass, and other yard waste can accumulate around the unit, obstructing airflow and reducing efficiency. Ensuring that the area around the outdoor unit is clear of debris is a simple yet effective maintenance task.

To clear debris, first, turn off the power to the unit. Remove any large debris manually and use a broom or brush to sweep away smaller particles. Trim any plants or shrubs within a 2-foot radius around the unit to prevent them from obstructing airflow. Regularly checking and maintaining this clearance can help your AC unit run more efficiently and prolong its lifespan.

Check the Thermostat Settings

The thermostat is the control center of your AC system, and ensuring it is working correctly and set to an appropriate temperature is crucial for maintaining comfort and efficiency. In Houston’s climate, a programmable thermostat can be particularly beneficial, allowing you to set different temperatures for different times of the day, thereby optimizing energy use.

Start by verifying that your thermostat is working correctly. If it’s not responding or displaying incorrect temperatures, it may need new batteries or recalibration. For more advanced issues, consulting the user manual or contacting a professional may be necessary.

Schedule Professional Maintenance

While there are many maintenance tasks you can perform yourself, it’s also important to schedule professional maintenance at least once a year. A professional technician has the expertise and tools to thoroughly inspect and maintain your AC system, ensuring it operates at peak efficiency.

During a professional maintenance visit, the technician will perform a comprehensive inspection of your AC system. This includes checking refrigerant levels, inspecting and cleaning coils, examining electrical components, and ensuring all parts are in good working condition.

Inspect the Condensate Drain

The condensate drain is responsible for removing the moisture that your AC system extracts from the air. Over time, this drain can become clogged with algae, mold, and debris, leading to water damage and higher indoor humidity levels. Inspecting and maintaining the condensate drain is a simple task that can prevent these issues.

Locate the condensate drain line, which is usually a PVC pipe near the indoor unit. Pour the solution into the drain line to help break down any algae or mold. For stubborn clogs, a wet/dry vacuum can be used to suction out the blockage. Regularly inspecting and cleaning the condensate drain pan can prevent water damage and ensure your AC system operates efficiently. If you notice persistent clogs or water damage, it may be necessary to contact a professional for a more thorough inspection.

Examine the Fins

The fins on your AC unit’s evaporator and condenser coils help facilitate heat exchange by allowing air to flow over the coils. These fins are delicate and can easily become bent or blocked by dirt and debris, reducing the efficiency of your AC system. Examining and maintaining the fins is an important task to ensure optimal performance.

To inspect the fins, first, turn off the power to the unit. For the outdoor unit, remove the protective grille or cover to access the fins. Use a fin comb, which is a special tool designed to straighten bent fins, to carefully realign any that are out of place. Be gentle to avoid damaging the fins further.

Check the Insulation

The insulation on your AC system’s refrigerant lines is crucial for maintaining the efficiency of the cooling process. These lines, which carry refrigerant between the indoor and outdoor units, need to be well-insulated to prevent energy loss. In Houston’s hot climate, proper insulation ensures that the refrigerant remains at the correct temperature, optimizing your AC’s performance.

To check the insulation, start by visually inspecting the refrigerant lines. Look for any signs of wear, such as frayed or missing insulation. If you find any damaged sections, you can replace them with new insulation. Foam pipe insulation is readily available at most hardware stores and is relatively easy to install. Maintaining proper insulation on your refrigerant lines helps to ensure your AC system operates efficiently, reducing energy consumption and prolonging the life of the unit.

Clean the Area Around the Indoor Unit

Just as it’s important to keep the outdoor unit free of debris, maintaining a clean area around the indoor unit is equally crucial. The indoor unit needs unobstructed airflow to function efficiently and prevent dust and debris from entering the system.

Begin by turning off the power to the indoor unit. Remove any items that are stored near the unit, such as boxes or furniture, to ensure there is ample space for air to circulate. Dust and vacuum the area around the unit, paying special attention to vents and air returns. If your indoor unit has a drain pan, check it for standing water and clean it to prevent mold growth.

Keeping the area around the indoor unit clean helps improve air quality and system efficiency, ensuring your AC operates smoothly throughout the year.

Check for Leaks

Refrigerant leaks in your AC system can significantly reduce its efficiency and cooling capacity. Detecting and addressing leaks promptly is essential to maintain optimal performance and avoid costly repairs. Signs of refrigerant leaks include a hissing sound near the refrigerant lines, ice buildup on the coils, or a noticeable decrease in cooling efficiency.

If you detect a refrigerant leak, it’s important to call a professional HVAC technician. Handling refrigerants requires special certification and equipment. A technician can safely repair the leak, recharge the system with the correct amount of refrigerant, and ensure your AC unit is functioning properly.

Run the System Early

Before the peak summer heat arrives, it’s a good idea to test your AC system to ensure it’s functioning correctly. Running the system early allows you to identify and address any issues before you rely heavily on it during the hottest months.

Turn on your AC system and set the thermostat to a comfortable temperature. If you notice any issues, such as insufficient cooling or strange sounds, it’s best to address them immediately. Running the system early not only ensures your comfort during the summer but also helps prevent unexpected breakdowns and costly emergency repairs. It gives you time to schedule any necessary maintenance or repairs with a professional technician.


In conclusion, regular DIY maintenance of your AC unit in Houston can save you from unexpected breakdowns and expensive repairs. By performing simple tasks like changing filters, cleaning coils, and checking refrigerant levels, you can ensure your system runs efficiently throughout the year. Maintaining your AC not only improves its performance and extends its lifespan but also contributes to better air quality in your home. While some tasks are best handled by professionals, staying proactive with these basic maintenance steps can keep your AC unit in top shape, providing you with consistent comfort during Houston’s hot and humid climate.

Leave a Comment

Your email address will not be published. Required fields are marked *

Scroll to Top