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Common Air Conditioning Problems & How to Troubleshoot Them

Common Air Conditioning Problems & How to Troubleshoot Them

Air conditioning is a lifesaver during those unbearable, sweltering days. It gives us the gift of a cool and cosy environment, allowing us to escape the heat’s relentless grip. However, just like any mechanical system, air conditioners can occasionally encounter problems.

Fortunately, knowing the common issues that may arise and understanding how to troubleshoot them can save you from spending a fortune on repairs and keep your aircon running smoothly. So, let’s look at some commonly faced air conditioning problems and discover effective troubleshooting techniques to tackle them head-on.

Insufficient Cooling

So, you’re cranking up the aircon, but it’s just not delivering that refreshing coolness you crave. What’s up with that? Here are a few things to check:

  • Check your air filter: If it’s clogged or dusty, your airflow can get all choked up, resulting in weak cooling. Keep that filter clean or replace it regularly to keep the air flowing smoothly.
  • Examine your thermostat settings: Ensure it’s set to the right temperature and that the cooling mode is activated. Sometimes, a wonky thermostat setting can mess with your aircon’s performance.
  • Take a peek at the condenser unit: That big ol’ thing outside your home might be caked in dirt, leaves, or other gunk. Keep the area around it clear and ensure it is not obstructed to boost its efficiency.
  • Keep refrigerant levels in check: If you suspect your refrigerant is running low, it can put a damper on your cooling game. Call in a professional HVAC technician to take a look and recharge if needed.

Uneven Cooling

If certain areas of your home feel cooler than others, or if you notice uneven cooling throughout your space, it’s likely due to one of the following reasons:

  • Improper insulation: Inadequate insulation can lead to air leaks, causing temperature variations in different rooms. Check windows, doors, and other areas for drafts and seal them up tight.
  • Blocked vents: Ensure that all vents and registers are clear of any obstructions. Move furniture or objects that may be blocking the airflow to allow even distribution of cool air.
  • Dirty evaporator coils: Over time, those evaporator coils can accumulate dirt and dust, hampering their ability to absorb heat. Grab a soft brush and give them a gentle clean or hire professional aircon servicing services to get the job done.

Aircon Won’t Turn On

When faced with the issue of an unresponsive air conditioner, it can be highly frustrating. To help resolve this problem, consider following these steps for troubleshooting:

  • Check the power supply: Make sure your aircon unit is properly plugged in and that there is power flowing to the outlet. Reset the circuit breaker or replace any blown fuses if needed.
  • Examine the thermostat batteries: If your thermostat operates on batteries, give them a quick check. Sometimes, a fresh set of batteries can get things up and running again.
  • Inspect the condensate drain line: A clogged condensate drain line can trigger a safety feature that prevents your aircon from turning on. Clear any blockages using a wet/dry vacuum or call a professional for assistance.
  • Consult a professional: If none of the above steps works, it’s time to wave the white flag and reach out to an HVAC technician. Let them work their magic and get your aircon back in the game.

Strange Noises

Is your aircon unit serenading you with strange sounds? Here’s what those noises could mean:

  • Squealing or screeching: These sounds might signal a worn-out belt or motor bearing. Get a professional to check it out and replace any worn parts.
  • Rattling or clanking: Loose components like fan blades or screws can create these sounds. Shut off the unit and call in the experts to avoid further damage.
  • Clicking sounds: Clicks during start-up or shutdown are usually normal. But if things get excessive or are accompanied by other issues, don’t hesitate to dial up the pros.


Nobody wants their aircon to act up. By familiarising yourself with these common issues and learning to troubleshoot them, you can save time, money, and frustration. So, keep that aircon running smooth and enjoy endless cool comfort!

At Affordable Aircon Services Pte Ltd, we understand the importance of hassle-free air conditioning maintenance. Whether you require an aircon chemical wash, maintenance, or repairs, our team of skilled professionals is dedicated to serving you. Don’t let your air conditioning system suffer silently. Contact us today, and let us ensure your coolness remains unmatched!

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