Important AC Maintenance Tips for Longevity and Efficiency

As property owners, we all strive to create a comfortable, energy-efficient indoor environment. A key component to achieving this goal is maintaining the optimal performance of our air conditioning systems. Proper AC maintenance not only ensures consistent comfort but also enhances the system’s energy efficiency, extends its service life, and reduces repair costs. While there is no one-size-fits-all approach, several best practices can guide you in creating a personalized AC maintenance plan for your residential, commercial, or new construction property.

We will discuss essential AC maintenance tips to help you keep your system running smoothly, maximize its longevity, and improve its energy efficiency. Implementing these tips, combined with regular check-ups from our professionals and technicians, will contribute to maintaining your system’s peak performance, enhancing the overall comfort of your property, and potentially cutting down on your energy expenses.

1. Regular Filter Cleaning and Replacement:

One of the most critical aspects of AC maintenance is regularly cleaning or replacing filters. Dirty or clogged filters can restrict airflow, decrease system efficiency, and compromise indoor air quality. We recommend inspecting filters at least once a month and replacing or cleaning them when necessary, particularly during heavy-use periods like summer.

For central air conditioning systems, replace or clean filters located in the air handler or return air ducts. For ductless mini-split systems and window air conditioners, remove the filter from the indoor unit according to the manufacturer’s instructions, then clean or replace as needed. Portable air conditioners typically have a washable filter that can be cleaned using a sponge, warm water, and mild detergent.

2. Keep the Outdoor Unit Clean:

It is also crucial to keep the outdoor unit free from debris, leaves, and other obstructions that can limit airflow and negatively impact performance. Regularly check around the outdoor unit to ensure there is ample space for proper airflow and remove any obstructions if required. Additionally, gently clean the exterior surface and the fins of the unit with a vacuum cleaner brush attachment, taking care not to bend or damage them.

3. Maintain the Condensate Drain Line:

Air conditioners remove moisture from the air, which collects and drains away through the condensate drain line. Over time, this line can become clogged with algae or debris, leading to water damage, increased humidity, and mold growth. To maintain the condensate drain line, regularly check for visible signs of blockages or leaks. If necessary, you can clean the drain line by using a wet/dry vacuum or a long, flexible brush to remove obstructions. For preventative maintenance, you can occasionally pour a mix of water and a mild household bleach down the drain line to help keep it clear.

4. Schedule Professional AC Maintenance:

While there are various tasks property owners can undertake themselves, scheduling professional AC maintenance at least once a year is essential for optimal performance. Our professionals and technicians can perform comprehensive inspections, diagnose potential issues, and perform necessary maintenance tasks to keep your system running smoothly. Professional maintenance often includes tasks such as checking refrigerant levels, cleaning and adjusting blower components, tightening electrical connections, and examining safety controls and thermostats.

Addressing Common AC Maintenance Issues

Beyond the above maintenance tips, it is essential to be aware of common AC maintenance issues that could affect your system’s performance and efficiency. Some of these issues include:

1. Leaking Refrigerant:

Over time, your AC system may develop leaks in the refrigerant lines, resulting in reduced cooling capacity and energy efficiency. If you suspect a refrigerant leak, our professionals can inspect and repair the leak, then recharge the refrigerant to the appropriate level.

2. Electrical Issues:

Electrical issues can have a significant impact on your AC system’s performance. Regularly check for any loose or damaged wiring, broken connections, or corroded contacts. If you encounter electrical problems, it is best to contact our professionals to inspect and resolve the issue safely and effectively.

3. Frozen Evaporator Coil:

Insufficient airflow or low refrigerant levels can cause the evaporator coil to freeze, reducing your AC system’s cooling capacity. If you notice a frozen evaporator coil, try increasing airflow by cleaning air filters, ducts, and vents. If the problem persists, our professionals can help diagnose and resolve the issue.


Implementing a proactive AC maintenance plan is essential for maintaining the performance, efficiency, and longevity of your air conditioning system. By following these essential AC maintenance tips and regularly scheduling professional maintenance visits, you can ensure optimal comfort, energy efficiency, and extended system life for your residential, commercial, or new construction property.

Our team at GV’S Heating & Cooling takes great pride in offering expert guidance, support, and exceptional service tailored to your specific AC maintenance needs. Contact our HVAC company in Glenview, IL today to schedule a maintenance visit or discuss your air conditioning requirements – let us help you keep your AC system running smoothly, efficiently, and problem-free.