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Air Conditioning Maintenance Tips: Keep Your Cool All Summer Long

Summer is just around the corner, and that means it's time to make sure your Burnsville area home air conditioning system is in top shape. Proper air conditioning maintenance not only keeps your home comfortable during the hot months but also ensures that your AC unit runs efficiently, saving you money on energy bills and avoiding costly 24/7 emergency AC repair. In this blog,

1. Replace or clean the air filters regularly

One of the simplest and most crucial maintenance tasks is replacing or cleaning your AC unit's air filters. Clogged or dirty filters can reduce airflow, making your system work harder and less efficiently. As a result, your energy bills may increase, and your AC unit may experience more wear and tear. It's recommended to replace or clean the filters every 3 months, depending on your system and usage. If you have pets or live in a particularly dusty area, you might need to do this more frequently.

2. Clean the outdoor condenser unit

The outdoor condenser unit is responsible for releasing heat from the refrigerant to the outside air. Keep the area around the unit clean and free of debris, such as leaves and grass clippings, to ensure proper airflow. Use a soft brush or a garden hose with a gentle spray to clean the fins and coils on the unit. Be cautious not to bend or damage the fins, as this can reduce the unit's efficiency.

3. Inspect and clean the indoor evaporator coil

The indoor evaporator coil is responsible for cooling the air inside your home. Over time, dust and debris can accumulate on the coil, reducing its efficiency. To clean the coil, turn off the power to your AC system and remove the access panel. Use a soft brush or a no-rinse coil cleaner to remove dirt and debris. If the coil is extremely dirty, consider hiring a professional HVAC technician to perform a thorough cleaning.

4. Inspect and clean the drain line

The condensate drain line removes excess moisture from your AC system. Over time, algae and mold can grow inside the line, potentially causing a blockage and leading to water damage in your home. To clean the drain line, locate the drain access, usually a small cap or plug, and remove it. Use a wet/dry vacuum to remove any clogs, and then pour a solution of one cup of white vinegar and one cup of warm water down the drain to kill any remaining algae or mold.

5. Check and seal ductwork

Leaky ducts can significantly reduce your AC system's efficiency, leading to higher energy bills and uneven cooling throughout your home. Inspect your ductwork for any signs of damage or wear, such as disconnected joints or holes. Seal any leaks using mastic sealant or metal tape – avoid using standard duct tape, as it can degrade over time. If you suspect your ductwork has significant issues, consider scheduling an appointment with a professional to inspect and repair it.

6. Inspect and adjust the thermostat

Your thermostat is the control center for your AC system, so it's essential to ensure it's functioning correctly. Check that the thermostat is level and securely mounted on the wall. Test the thermostat by setting the temperature a few degrees below the current room temperature – the AC should kick on within a few minutes. If it doesn't, you may need to replace the batteries or consider upgrading to a programmable or smart thermostat for better efficiency and convenience.

7. Schedule regular professional maintenance

While there are many DIY maintenance tasks you can perform, it's essential to schedule regular professional maintenance as well. A qualified HVAC technician can identify and address any potential issues before they become significant problems. They can also check the refrigerant levels, ensure all electrical connections are secure, and inspect the entire system for optimal performance. It's recommended to schedule a professional tune-up at least once a year, ideally before the summer season begins.

8. Keep your AC unit shaded

An AC unit that's exposed to direct sunlight has to work harder to cool your home, resulting in higher energy bills and increased wear and tear. Planting trees or installing a shade structure around the outdoor condenser unit can help keep it cooler and improve its efficiency. However, be sure to maintain a clearance of at least two feet around the unit to ensure proper airflow and avoid obstructing the technician's access for maintenance.

9. Insulate your home

Proper insulation helps maintain a consistent temperature inside your home, reducing the strain on your AC system. Inspect your attic and walls for adequate insulation, and consider adding more if necessary. Sealing any gaps or cracks around windows and doors can also help prevent cool air from escaping and warm air from entering, making your AC system's job easier.

10. Use ceiling fans and natural ventilation

Ceiling fans and natural ventilation can help supplement your AC system and reduce your reliance on it. By circulating the cool air produced by your AC, ceiling fans can create a wind-chill effect that makes your home feel cooler without lowering the thermostat. On cooler days and nights, opening windows and doors can also help bring fresh air into your home, reducing the need to run your AC.


Proper maintenance of your air conditioning system is crucial to ensure it runs efficiently and keeps your home or commercial space comfortable all summer long. By following these essential tips, you can prolong the life of your AC unit, save money on energy bills, and enjoy a cool and relaxing home during the hot months. Remember that regular professional maintenance is just as important as DIY tasks, so be sure to schedule a tune-up with a qualified Burnsville HVAC technician at least once a year.


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