What should I do if my AC is still not cooling after an AC Tuneup?

Living in Florida, having a properly functioning air conditioning (AC) system is essential. With the hot and humid climate, a reliable AC is a must-have for homeowners. However, even after getting an AC tuneup, some people may still experience cooling issues. It can be frustrating to invest in professional maintenance and still not get the desired results. In this article, we will explore common reasons why an AC may not cool effectively after a tuneup and provide homeowners with practical steps to troubleshoot the problem.

Understanding the AC Tuneup Process

An AC tuneup is a preventive maintenance service that helps ensure your AC system is running at its optimal capacity. It involves a thorough inspection and servicing of various components to enhance performance and efficiency. Regular tune-ups can help extend the lifespan of your AC and minimize the risk of breakdowns.

During an AC tuneup, a qualified technician will check and service several components of your AC system, including:

  • Cleaning or replacing air filters
  • Inspecting and cleaning the condenser and evaporator coils
  • Checking and tightening electrical connections
  • Lubricating moving parts
  • Testing the thermostat
  • Checking refrigerant levels and detecting leaks
  • Inspecting and cleaning the blower motor and fan

The goal of an AC tuneup is to ensure that all the vital components of your AC system are working correctly, promoting optimal cooling performance and energy efficiency.

Common Reasons Why ACs May Still Not Cool

Even after a professional AC tuneup, some homeowners may find that their AC is still not cooling adequately. There could be several reasons for this, including:

  • Refrigerant Leaks: If your AC system is low on refrigerant due to a leak, it can result in reduced cooling capacity. A professional technician can detect and repair refrigerant leaks to restore proper cooling.
  • Faulty Thermostats: If your thermostat is not calibrated correctly or is malfunctioning, it may not accurately measure the temperature and control the cooling cycle. This can result in inadequate cooling or erratic temperature fluctuations.
  • Clogged Filters: Dirty or clogged air filters can restrict airflow, reducing the efficiency of your AC system. Regularly cleaning or replacing filters is crucial to ensure proper cooling performance.
  • Inadequate Insulation: Poor insulation in your home can lead to heat gain, making it difficult for your AC to cool the space effectively. Proper insulation helps maintain a comfortable indoor temperature.
  • Blocked Vents: Blocked or closed vents can restrict airflow, preventing cool air from reaching different areas of your home. Ensure that all vents are open and unobstructed for optimal cooling.

Identifying and addressing these issues can help improve the cooling performance of your AC system.

DIY Troubleshooting Steps

If your AC is still not cooling effectively after a tuneup, there are several troubleshooting steps you can take before seeking professional help. These steps include:

  • Check Air Filters: Dirty or clogged air filters can restrict airflow and hinder cooling performance. Check the filters and clean or replace them if necessary. Regular filter maintenance is crucial for optimal cooling efficiency.
  • Reset Thermostat: If your thermostat is not functioning correctly, try resetting it. Sometimes, a simple reset can resolve minor issues and restore proper cooling.
  • Ensure Proper Airflow: Check that all vents and registers are open and unobstructed. Ensure that furniture or other objects are not blocking the airflow. Proper airflow is essential for efficient cooling.
  • Inspect for Refrigerant Leaks: If you suspect a refrigerant leak, check for any signs of oil or refrigerant stains around the AC unit. If you find any, it is crucial to contact a professional technician to repair the leak and recharge the refrigerant.
  • Check Circuit Breaker: Make sure the circuit breaker for your AC unit has not tripped. If it has, reset it and check if the cooling resumes.

These troubleshooting steps are relatively simple and can often resolve minor issues that may be affecting your AC's cooling performance.

When to Call a Professional

While DIY troubleshooting steps can help resolve minor issues, there are instances where it is best to involve a professional HVAC technician. Signs that indicate it's time to call a professional include:

  • Continued inadequate cooling even after DIY troubleshooting steps
  • Loud or unusual noises coming from the AC unit
  • Frequent AC cycling or short cycling
  • Unexplained increase in energy bills
  • Visible signs of refrigerant leaks or water leaks
  • AC unit not turning on or off

By contacting licensed professionals, you can ensure that any underlying issues are correctly diagnosed and addressed, preventing further damage to your AC system.

Useful Maintenance Tips

Preventing future cooling issues requires regular maintenance and care for your AC system. Here are some useful maintenance tips for homeowners:

  • Regular Filter Cleaning/Replacement: Clean or replace your air filters regularly, ideally every one to three months, depending on usage. This helps maintain proper airflow and cooling efficiency.
  • Annual Professional Maintenance: Schedule annual professional maintenance for your AC system. This ensures that all components are thoroughly inspected, cleaned, and serviced, optimizing performance and identifying any potential issues early on.
  • Proper Ventilation: Ensure that your AC unit is not obstructed by objects or debris. Keep the area around the outdoor unit clear to allow proper airflow. Additionally, proper ventilation in your home helps maintain consistent cooling.

Following these maintenance tips can help prolong the lifespan of your AC system and prevent cooling issues.


A properly functioning AC system is crucial for homeowners in the hot and humid climate of Florida. If your AC is still not cooling effectively after an AC tuneup, it can be frustrating. However, by understanding the AC tuneup process, troubleshooting the issue with DIY steps, and knowing when to involve a professional, you can improve the cooling performance of your AC system. Additionally, regular maintenance and care can help prevent future cooling issues and ensure the longevity of your AC system. Stay cool and comfortable in your Florida home by taking the necessary steps to resolve any cooling issues you may encounter.

Frequently Asked Question

Performing an AC tuneup on your own, also known as DIY AC maintenance, can be a viable option if you have the necessary knowledge and skills. However, it is generally recommended to hire a professional technician for several reasons. First and foremost, professionals possess the expertise and experience to accurately diagnose any underlying issues with your AC system. They are trained to identify potential problems that may go unnoticed by an untrained eye. Additionally, professional technicians have access to specialized tools and equipment that are required for a thorough inspection and maintenance of your AC unit. Moreover, attempting to perform the tuneup yourself may void any existing warranties or insurance coverage on the system. Lastly, hiring a professional ensures that the job is done efficiently and effectively, minimizing the risk of further damage or breakdowns in the future. Therefore, while performing an AC tuneup on your own may seem like a cost-saving measure initially, it is advisable to enlist the services of a professional technician for optimal results and peace of mind.

To find a reliable AC technician in Florida, it is advisable to consider several factors. Firstly, conducting thorough research on local HVAC companies and reading customer reviews can provide valuable insights into the quality of their services. Additionally, checking if the technicians are certified by reputable organizations such as NATE (North American Technician Excellence) ensures their competence in handling AC tuneups. When considering the cost of an AC tuneup in Florida, it is important to remember that prices can vary depending on factors such as the size of the unit and any additional services required. However, it is recommended not to compromise quality for a lower price as this may lead to subpar results and potential future problems with your AC system. By prioritizing reliability and expertise over cost alone, individuals can ensure they hire a professional technician who will perform an efficient and effective AC tuneup in Florida.

AC tuneup indicators are important for maintaining the proper functioning of an air conditioning unit. Regular AC tuneups help in identifying potential issues before they escalate into major problems, thereby preventing costly repairs and breakdowns. Some specific signs or symptoms that indicate the need for an AC tuneup include reduced airflow, unusual noises, foul odors, inconsistent temperature control, and increased energy bills. Reduced airflow may suggest a clogged air filter or ductwork issues, while unusual noises could indicate loose or worn-out components. Foul odors might be a sign of mold or bacterial growth within the unit. Inconsistent temperature control may point to thermostat malfunctions or refrigerant leaks. Finally, increased energy bills could signify inefficiency due to dirty coils or improper refrigerant levels. Therefore, recognizing these indicators is crucial as it allows homeowners to address potential problems early on and ensures optimal performance and longevity of their AC units.

The potential consequences of not performing regular AC maintenance include increased repair costs and decreased lifespan. Without regular maintenance, the AC unit is more likely to experience breakdowns and malfunctions, leading to costly repairs. Over time, components may become worn or damaged, resulting in decreased efficiency and performance. Neglecting maintenance also increases the risk of major system failures, requiring extensive repairs or even replacement of the entire unit. Furthermore, lack of regular tune-ups can shorten the lifespan of the AC unit as it is subjected to excessive wear and tear without proper upkeep. Therefore, it is essential to prioritize regular AC maintenance to avoid these potential consequences and ensure optimal performance and longevity of the system.

Regular AC tuneups offer several additional benefits beyond increased energy efficiency. One such benefit is improved air quality. During a tuneup, the AC system is thoroughly cleaned and filters are replaced, which helps remove dust, allergens, and other pollutants from the air. This can greatly improve indoor air quality and contribute to a healthier living environment. Another benefit is an extended lifespan of the AC unit. By regularly maintaining and servicing the system, potential issues can be identified and addressed early on, preventing further damage or breakdowns that could lead to costly repairs or even replacement of the entire unit. Overall, regular AC tuneups not only enhance energy efficiency but also lead to improved air quality and prolong the lifespan of the system.