Tips for Maintaining an Older Air Conditioning System & Extending Its Life

​As a homeowner in Minnesota, you know that reliable air conditioning is essential during the hot summer months. If you have an older air conditioning system, it’s crucial to maintain it properly to keep it running efficiently for as long as possible. Here are some expert tips to help you limp along your aging AC system and extend its lifespan.
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1. Regularly Change or Clean Air Filters - One of the simplest yet most effective ways to maintain your older air conditioning system is to regularly change or clean the air filters. Clogged or dirty filters can restrict airflow, making your system work harder and reducing its efficiency. Aim to replace or clean filters every 1-3 months, especially during peak usage periods.
2. Keep the Outdoor Unit Clean - The outdoor unit of your air conditioning system can accumulate dirt, leaves, and debris, which can obstruct airflow and affect performance. Make it a habit to clean the area around the outdoor unit regularly. Trim any nearby vegetation and ensure there’s at least two feet of clearance on all sides. Additionally, gently wash the condenser coils with a garden hose to remove dirt and debris.
3. Check and Clean the Evaporator Coils - Over time, evaporator coils can become dirty, reducing their ability to absorb heat. To keep your system running efficiently, inspect the evaporator coils annually and clean them as needed. If you’re unsure how to do this, consider scheduling a professional HVAC maintenance service.
4. Monitor Refrigerant Levels - Low refrigerant levels can cause your AC system to work harder, leading to potential damage and decreased efficiency. If you notice that your system is not cooling as effectively as it used to, it may be due to low refrigerant. Have a professional technician check and refill the refrigerant if necessary. Be aware that older systems using R-22 refrigerant are being phased out, so discuss alternatives with your technician.
5. Inspect and Seal Ductwork - Leaky or poorly insulated ductwork can lead to significant energy loss and reduce your system’s efficiency. Inspect your ductwork for any visible leaks or damage and seal them with appropriate materials. Additionally, consider adding insulation to your ducts to improve overall efficiency.
6. Adjust the Thermostat - Using your thermostat efficiently can help prolong the life of your older AC system. Set your thermostat to a slightly higher temperature when you’re not home and lower it only when you need cooling. Consider installing a programmable thermostat to automatically adjust the temperature based on your schedule, reducing unnecessary strain on your system.
7. Ensure Proper Ventilation - Proper ventilation is essential for maintaining indoor air quality and reducing the load on your AC system. Use exhaust fans in kitchens and bathrooms to expel hot air and humidity. Additionally, ensure that your home is well-ventilated to allow for better air circulation.
8. Schedule Regular Professional Maintenance - Regular professional maintenance is crucial for keeping your older air conditioning system in good working condition. Schedule annual tune-ups with a trusted HVAC professional to inspect, clean, and service your system. This proactive approach can help identify and address minor issues before they become major problems.
9. Reduce Heat Gain -  Minimize the amount of heat entering your home to reduce the workload on your AC system. Use blinds or curtains to block direct sunlight, especially during the hottest parts of the day. Additionally, consider using reflective window films or adding insulation to your attic to further reduce heat gain.
10. Consider Temporary Cooling Solutions - If your older AC system is struggling to keep up, consider using temporary cooling solutions to supplement it. Portable air conditioners or fans can help provide additional cooling in specific areas, reducing the strain on your central system.

​Maintaining an older air conditioning system requires diligence and regular care. By following these expert tips, you can extend the life of your AC unit and ensure it continues to provide cooling comfort for your Minnesota home. Remember that regular maintenance and timely repairs are key to keeping your system running efficiently for as long as possible.