Over time, an AC compressor can malfunction, causing major problems for your cooling system. In Singapore, where aircon use is constant, early signs of compressor failure should never be ignored. You may not know if you have AC compressor failure, but there are a couple of symptoms you can watch out for that may indicate a problem with your AC system. Learning to recognize these signs is important to prevent further damage to your aircon unit!
6 Signs of a Bad AC Compressor
Rattling or Whirring Noise
If you hear strange noises like rattling, whirring, or clunking from your air conditioner, it could be a sign of a bad AC compressor. Loose internal components create a rattling noise, while weakened parts may produce a whirring sound. This is common in older AC units, especially in Singapore’s high-rise HDB flats and condominiums, where air conditioners are heavily used due to the year-round warm weather.
Warm Air Coming From the Air Conditioner
Your AC should consistently blow cool air, especially in Singapore’s humid climate. If you notice warm air coming from your unit, it could be due to aircon compressor problems. While warm air can also indicate issues like a clogged air filter or low refrigerant levels, compressor failure is a serious problem that requires immediate attention.
High Electricity Bill
A malfunctioning air conditioner compressor will force your aircon system to work harder, consuming more energy. If your electricity bill has unexpectedly spiked despite your usual electricity usage, the culprit might be your compressor!
Refrigerant Leaks
The compressor is responsible for keeping the refrigerant intact. When the compressor is down, the refrigerant lines may start to leak, causing fluid to drip out of your air conditioner. You'll notice the cold air getting warmer as the refrigerant levels lower, and fluid may be leaking out of the entire air conditioning unit.
Overheating Air Conditioning System
If your aircon unit feels hot to the touch or frequently overheats, a faulty compressor could be to blame. This is especially common in older units installed in landed properties in Singapore. When your system overheats, it may shut down unexpectedly or blow hot air instead of cool air, making it impossible to escape Singapore’s tropical climate!
Poor or Weak Airflow
Poor airflow coming from your unit may indicate a multitude of problems, one being signs of a bad AC compressor. One of our clients in Singapore requested a refrigerant top-up due to a suspected freon leak causing poor airflow. However, after our technician's inspection–we found that the main issue was a broken compressor. That’s why the AC is unable to cool the room, despite running at full power.
Is your aircon compressor not working but fan is running? Check this guide?
What to Do with a Bad AC Compressor?
Solution #1: Have the AC Compressor Replaced
One of the most effective ways to resolve bad AC compressor issues is to replace the faulty part. The lifespan of an aircon compressor ranges between 10 to 15 years, depending on usage and maintenance. But do keep in mind, with Singapore’s climate—where air conditioners might run frequently, compressors can wear out faster due to high humidity and heavy usage.
Our experienced aircon technicians can inspect your unit and determine if a replacement is necessary. The compressor replacement cost varies from model to model, and across different brands, but our experienced technician should be able to find an appropriate replacement for your AC unit.
Solution #2: Install a New Air Conditioner
If your aircon unit is more than 10-15 years old, frequently breaking down, or has multiple failing components, replacing it may be the best solution. Over time, aging air conditioners will lose their efficiency, leading to higher electricity bills and frequent repairs. Instead of continuously repairing an old system, investing in a new energy-efficient air conditioner can help you save money in the long run.
In Singapore, many newer models come with energy-efficient technology and smart cooling features, so upgrading your aircon can improve both performance and cost savings.
Unsure about choosing the right AC for your HDB or landed property in Singapore? Our technicians can help you—from purchasing to installation and maintenance!
Solution #3: Have the AC Compressor Fixed
Not all aircon compressor problems require a full replacement. Sometimes, minor issues such as dirt buildup or blockages can affect compressor performance. In these cases, cleaning or minor repairs may be enough to restore your AC’s cooling power.
If your compressor is clogged or dirty, a professional cleaning service can remove the debris and ensure your unit runs smoothly. Our technicians can diagnose the issue and recommend whether a repair or a more extensive fix is needed.
Need Help with Your AC?
If you’re dealing with signs of a bad AC compressor, don't wait for the problem to worsen. As a trusted aircon specialist in Singapore, Luce provides expert diagnostics, repairs, and installation to keep your home cool and comfortable.
Contact us today for a professional inspection and let us help resolve your aircon compressor problems!
Check out our article on window ac not blowing cold air!
