How to Maintain Your Air Conditioning System for Optimal Performance

How to Maintain Your Air Conditioning System for Optimal Performance

An air conditioning (AC) system is vital for modern comfort, especially in hot summers, ensuring a pleasant indoor climate. Regular maintenance is key to keeping your AC efficient and prolonging its lifespan. In this blog, we’ll explore a detailed guide on maintaining your air conditioning in Newcastle for peak performance.

Regularly Clean or Replace the Air Filter

Cleaning or replacing your air filter is one of the easiest and most effective maintenance tasks for your AC system. A dirty filter can block airflow, lower efficiency, and increase energy consumption. It’s recommended to check the filter monthly, especially during peak cooling times, and replace it every 1-3 months, depending on usage and type. A clean filter improves air quality by trapping dust, pollen, and other particles, crucial for those with allergies or respiratory issues. It also helps your AC operate efficiently by allowing unrestricted airflow, saving energy and extending the system’s lifespan.

Forgetting to change the filter can lead to dust and dirt buildup, potentially causing the evaporator coil to freeze and reducing cooling effectiveness, risking damage to the system. This simple task requires minimal effort but substantially benefits performance and longevity.

Clean the Coils

The evaporator and condenser coils gather dirt over time, hindering the system’s heat absorption and dissipation abilities. Regular cleaning enhances efficiency and prolongs coil lifespan. Always power off before cleaning, and use a soft brush or cloth to clear debris. Consider a commercial coil cleaner followed by a water rinse for tougher grime. Clean coils ensure improved airflow and heat exchange, which is crucial for peak performance.

Check the Refrigerant Level

Refrigerant is crucial for cooling your home efficiently. Low levels can cause ineffective cooling and increased energy costs. It’s wise to have a professional inspect and refill the refrigerant as needed. Signs of low refrigerant include poor cooling, ice buildup on coils, and unusual noises like hissing or bubbling. Maintaining proper refrigerant levels ensures your system operates effectively and prevents potential damage.

Inspect the Thermostat

The thermostat serves as the control hub for your AC system. Ensure it functions correctly and is accurately calibrated. Regularly review settings and replace batteries as needed. Consider upgrading to a programmable thermostat for enhanced efficiency and control, ensuring your system maintains desired temperatures for improved comfort and efficiency.

Programmable thermostats enable setting different temperatures for various times of day, optimising operation when you’re home and conserving energy when away. Smart thermostats go further by learning your preferences and adjusting automatically. Regular maintenance prevents issues like inaccurate temperature readings, which can reduce cooling efficiency and increase energy costs.

Clear the Condensate Drain

The condensate drain removes moisture gathered by the evaporator coil. Over time, it can become blocked with dirt and algae, causing water damage and higher humidity levels. To clear the drain, find the drain line and use a wet/dry vacuum to remove any blockage. Alternatively, pouring a mixture of vinegar and water into the drain line can dissolve buildup. Keeping the condensate drain clear prevents water damage and ensures ideal humidity levels in your home.

Maintain the Outdoor Unit

The outdoor unit, or condenser, must be kept clear of debris and obstructions for optimal airflow and efficiency. Remove leaves, grass, and debris around it, and maintain a two-foot clearance by trimming nearby plants. Clean the fins gently with a garden hose. Regularly maintaining the outdoor unit ensures efficient AC operation and prevents potential damage.

Schedule Professional Maintenance

While some tasks can be DIY, scheduling professional maintenance annually is crucial. A trained technician conducts a thorough inspection, cleans and lubricates parts, and detects potential issues early. Professional service covers checking refrigerant levels, inspecting electrical components, testing efficiency, and lubricating moving parts. Technicians have the expertise and tools for comprehensive maintenance, ensuring peak AC performance and minimising expensive repairs.

Monitor System Performance

Monitor your AC system regularly to spot issues early. Watch for strange noises, uneven cooling, or higher energy bills, which may signal underlying problems. Detecting issues early allows for prompt repairs, preventing more significant problems and ensuring continual home comfort. Monitoring system performance helps maintain efficiency and extends your AC’s lifespan.

Unusual noises like banging, rattling, or grinding suggest loose or damaged parts needing immediate attention. Inconsistent cooling may indicate ductwork, thermostat, or refrigerant problems.


Maintaining your air conditioning system is crucial for peak performance, energy efficiency, and durability. Regularly clean and inspect your system, replace filters, and schedule professional maintenance to ensure smooth, efficient operation and year-round home comfort. A well-maintained AC not only cuts energy costs but also minimises expensive repairs and extends system life. Dedicate time to regular upkeep for consistent comfort, better indoor air quality, and long-term financial savings. Make way for consistent and dependable air conditioning service in Lake Macquarie with our expert team at Onsite Air.

Bonnie Baldwin