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Common Air Conditioner Problems and How To Fix Them

During the summer, air conditioners become our reliable companions in maintaining a cool and comfortable indoor environment. However, like any other mechanical device, air conditioners are prone to occasional malfunctions. Knowing how to identify and address common air conditioner problems can save you from discomfort. Not only that, but it can also save you from potentially expensive repairs. Let’s discuss some frequently encountered air conditioner issues and also some practical solutions to fix them.

1. Insufficient Cooling

Problem: Your air conditioner is running, but the room is not cooling adequately.


  • Check the thermostat settings: Ensure that the thermostat is set to the correct temperature and also in cooling mode.
  • Clean or replace the air filter: A clogged or dirty air filter can restrict airflow and also hinder cooling performance.
  • Clear obstructions around the outdoor unit: Ensure that there are no obstructions such as leaves, debris, or plants blocking the airflow around the outdoor unit.
  • Check for refrigerant leaks: Low refrigerant levels can affect cooling. If you suspect a refrigerant leak, contact a professional technician for inspection and repair.

2. Air Conditioner Not Turning On

Problem: Your air conditioner is unresponsive and fails to turn on.


  • Check the power supply: Verify that the unit is properly connected to a functioning power outlet and that there are also no tripped circuit breakers or blown fuses.
  • Examine the thermostat batteries: If your thermostat uses batteries, check if they need replacement.
  • Clean the condenser coils: Dirty condenser coils can cause the unit to overheat, resulting in a shutdown. Clean the coils using a soft brush to improve efficiency. You can also use a vacuum cleaner.

3. Strange Noises

Problem: Your air conditioner is making unusual noises such as grinding, rattling, or squealing.


  • Tighten loose components: Check for any loose screws or bolts in the unit and tighten them. Vibration during operation can loosen parts, leading to noisy operation.
  • Clean the fan blades: Accumulated dirt or debris on the fan blades can cause them to become unbalanced and produce noises. Clean the blades carefully or consult a professional if needed.
  • Lubricate moving parts: Lack of lubrication can cause friction and generate noise. Lubricate the motor and other moving parts as recommended by the manufacturer.

4. Water Leaks

Problem: Water is dripping or pooling around your air conditioner.


  • Clean the condensate drain line: A clogged condensate drain line can cause water to back up and leak. Clear the line using a vacuum. You can also gently flush it with a mixture of water and bleach.
  • Check the condensate pan: Inspect the condensate pan beneath the indoor unit for cracks or damage. Replace the pan if necessary.
  • Improve insulation: Ensure that the insulation around the refrigerant lines is intact. Insufficient insulation can cause condensation and also water leaks.

5. Uneven Cooling

Problem: Some areas in your home are colder or hotter than others.


  • Check for blocked vents: Ensure that furniture, curtains, or other objects are not obstructing the vents. Clear any blockages to allow proper airflow.
  • Consider zoning or balancing: If the temperature variation persists, consult an HVAC professional to assess your system’s design and discuss options such as zoning or balancing to achieve even cooling.

Contact Comfort Experts Today for All Your Air Conditioner Needs in Melbourne, FL and Surrounding Areas

Regular maintenance, prompt troubleshooting, and addressing common air conditioner problems can help ensure optimal cooling performance and extend the lifespan of your unit. However, if you encounter complex or potentially dangerous issues, it’s always advisable to seek assistance from a qualified HVAC technician. By staying proactive and addressing problems early on, you can enjoy a cool and comfortable indoor environment throughout the summer. Our HVAC contractors at Comfort Experts are here for all your HVAC needs – whether you need a repair, maintenance, replacement or installation. To schedule your appointment today, contact us here.