AC maintenance and troubleshooting tips

Top DIY Tips for AC Maintenance and Troubleshooting


In scorching summer months, a well-functioning air conditioner is a true lifesaver. However, like any other appliance, ACs require regular maintenance to ensure they run efficiently and troubleshoot any potential issues. While professional maintenance is essential, there are several DIY tips that you can follow to keep your AC in top shape. In this article, we’ll explore some easy-to-follow AC maintenance and troubleshooting tips to help you beat the heat and stay comfortable throughout the summer.

1. Clean or Replace Air Filters Regularly

One of the simplest yet most effective maintenance tasks is to clean or replace your AC’s air filters regularly. Clogged filters can restrict airflow, reducing the AC’s efficiency and leading to higher energy consumption. Aim to clean the filters every month and replace them at least once every three months, or more frequently if you have pets or live in a dusty environment.

2. Check and Clean the Condenser Coils

The condenser coils in your AC are responsible for releasing heat outside your home. Over time, these coils can accumulate dirt and debris, hindering their ability to dissipate heat. Regularly inspect the condenser coils and clean them using a soft brush or a vacuum cleaner. This simple step can significantly improve your AC’s performance.

3. Keep the Surrounding Area Clean

Ensure that the area around your AC unit is clean and free from obstructions. Remove any leaves, grass, or debris that might have accumulated around the unit. A clutter-free environment will allow the AC to pull in the air more effectively and maintain its efficiency.

4. Check and Seal Air Leaks

Inspect your home for any air leaks around doors and windows, as they can lead to cool air escaping and hot air entering your living space. Seal these gaps with weatherstripping or caulk to prevent energy wastage and to make sure your AC doesn’t have to work harder than necessary.

5. Verify the Thermostat Settings

Ensure that your thermostat is set correctly and calibrated accurately. Consider investing in a programmable thermostat to optimize energy usage and maintain a comfortable indoor temperature when you are home and save energy when you are away.

6. Clean the Evaporator Coils

The evaporator coils absorb heat from the air inside your home, allowing the AC to produce cool air. Over time, these coils can collect dirt and grime, reducing their effectiveness. Gently clean the evaporator coils to maintain the efficiency of your AC system.

7. Check and Clear the Drainage Line

Clogged drainage lines can cause water to back up and potentially damage your AC unit. Inspect the drainage line regularly and clear any clogs to prevent water leakage and keep your AC running smoothly.

8. Lubricate Moving Parts

Your AC’s moving parts, such as the fan motor, may require lubrication to reduce friction and prevent wear and tear. Refer to your AC’s manual to identify the parts that need lubrication and use the appropriate lubricant.

9. Monitor the Refrigerant Level

Low refrigerant levels can indicate a leak in your AC system. If you notice that the cooling performance of your AC has decreased, it’s essential to have a professional inspect and repair any leaks and recharge the refrigerant.

10. Replace Worn-out Parts

If you notice any damaged or worn-out components while performing maintenance, make sure to replace them promptly. Ignoring worn-out parts can lead to more significant issues and costly repairs down the line.


Regular AC maintenance is key to keeping your air conditioning system operating at its best and prolonging its lifespan. By following these DIY tips for AC maintenance and troubleshooting, you can ensure that your AC works efficiently throughout the hot summer months. Remember, while these tips can help you maintain your AC, professional maintenance by a qualified technician is crucial for addressing complex issues and ensuring optimal performance.


  1. How often should I clean or replace my AC’s air filters?
    • Aim to clean the filters every month and replace them at least once every three months, or more frequently if you have pets or live in a dusty environment.
  2. Can I clean the condenser coils myself?
    • Yes, you can clean the condenser coils yourself using a soft brush or a vacuum cleaner. Be sure to turn off the power to the AC unit before performing any maintenance.
  3. What should I do if I notice water leakage from my AC unit?
    • If you notice water leakage, check and clear the drainage line to prevent further issues. If the problem persists, seek professional assistance.
  4. Is lubricating the AC’s moving parts necessary?
    • Yes, lubricating the moving parts is essential to reduce friction and prevent wear and tear. Refer to your AC’s manual for guidance.
  5. How can I monitor the refrigerant level in my AC?
    • Monitoring the refrigerant level requires professional expertise. If you suspect low refrigerant levels, contact a qualified technician for inspection and possible recharge.