Author: StringsSG

Living in Singapore’s hot and humid climate, your air conditioner isn’t just a luxury—it’s a necessity. Whether you stay in a condo, HDB flat, landed house, or a BTO, a well-functioning aircon is key to staying cool and comfortable.

But like any appliance, aircons break down over time. Here are 15 common air conditioning problems in Singaporean homes and what you can do about them.

1. Aircon Not Cold

One of the most frequent complaints. Your aircon is running, but the room just won’t cool down.

Possible causes:

• Clogged filters
• Low refrigerant gas
• Dirty condenser coils
• Failing compressor

Fix:
Start with a basic servicing. If the problem persists, a technician should check gas levels and clean internal components.

Book service here – https://www.stringssg.com/sg/aircon-servicing-singapore/aircon-not-cooling

2. Water Leaking From Indoor Unit

Dripping water from your unit can damage walls, furniture, and floors.

Possible causes:

• Clogged or cracked drainage pipe
• Full or overflowing drainage tray
• Frozen evaporator coil

Fix:
Book an aircon servicing. The technician will clean or replace the drainage pipe and clear any blockages.

Book service here – https://www.stringssg.com/sg/aircon-servicing-singapore/aircon-leaking-water

3. Aircon Making Noise

Unusual rattling, buzzing, or clicking sounds are red flags.

Possible causes:

• Loose fan blade or panel
• Motor issues
• Debris inside the unit

Fix:
Turn off the unit and schedule a check-up. Avoid using it further to prevent bigger damage.

4. Bad Odors or Foul Smell

A musty or sour smell can quickly ruin the comfort of your home.

Possible causes:

• Mould buildup
• Bacteria in the filter or coil
• Poor drainage

Fix:
Go for a chemical cleaning service to eliminate deep-seated mould and bacteria.

Book service here – https://www.stringssg.com/sg/aircon-servicing-singapore/aircon-chemical-wash-and-overhaul

5. Unit Turns On and Off Repeatedly (Short Cycling)

This affects both cooling and electricity bills.

Possible causes:

• Thermostat issues
• Dirty condenser coils
• Refrigerant problems

Fix:
Have a professional diagnose it—this could lead to long-term compressor damage if ignored.

6. Unusual Power Consumption

If your bill suddenly spikes, your aircon might be the culprit.

Possible causes:

• Low gas level (makes compressor work harder)
• Dirty filters
• Aged unit efficiency loss

Fix:
Regular servicing and cleaning help maintain energy efficiency.

7. Airflow Is Weak

The air is cold, but the room takes too long to cool.

Possible causes:

• Clogged filters
• Blocked fan
• Dirty blower wheel

Fix:
Clean filters monthly and schedule routine servicing to clean internal components.

8. Outdoor Unit Is Noisy

This usually indicates an issue with the compressor or fan motor.

Possible causes:

• Failing motor bearings
• Loose parts or panels
• Debris like leaves stuck inside

Fix:
Get a technician to inspect and clean the outdoor unit.

Book service here – https://www.stringssg.com/sg/aircon-servicing-singapore/top-3-reasons-for-noisy-aircon-compressor-how-to-fix

9. Remote Control Not Working

Sometimes it’s not the aircon—it’s the remote.

Possible causes:

• Dead batteries
• Faulty IR sensor
• Signal interference

Fix:
Change batteries first. If it still doesn’t work, try using a universal remote or consult your technician.

10. Thermostat Doesn’t Seem Accurate

Room feels warmer or colder than the setting.

Possible causes:

• Faulty sensor
• Poor thermostat placement (e.g., too close to a window)

Fix:
Relocate the thermostat if necessary or replace it if it’s malfunctioning.

Thermostat complete guide – https://www.stringssg.com/sg/aircon-servicing-singapore/aircon-thermostat

11. Gas Leaking or Low Refrigerant

You may notice reduced cooling and hissing sounds.

Possible causes:

• Worn-out connections
• Corroded coil
• Physical damage

Fix:
Do not DIY. A certified technician will safely top up or refill the gas and repair leaks.

Complete guide – https://www.stringssg.com/sg/aircon-servicing-singapore/aircon-gas-leakage

12. Frozen Indoor Coil

If you see ice on the evaporator coil, something’s wrong.

Possible causes:

• Dirty filters
• Refrigerant leak
• Poor airflow

Fix:
Turn off the unit and let the coil thaw. Then call a technician for a full inspection.

13. Fan Not Working

No air coming out of the unit even though it’s on?

Possible causes:

• Motor failure
• Electrical issue
• Broken fan blade

Fix:
A fan replacement or internal part repair is usually required.

Blower replacement guide – https://www.stringssg.com/sg/aircon-servicing-singapore/aircon-blower

14. Aircon Won’t Turn On

Nothing happens when you press the power button.

Possible causes:

• Power trip or blown fuse
• Faulty capacitor
• Remote sensor issue

Fix:
Check your circuit breaker first. If that’s not the issue, call a technician.

DIY – https://www.stringssg.com/sg/aircon-servicing-singapore/do-this-when-your-aircon-stops-working-suddenly

15. Bad Chemical Smell

A chemical or burning smell is serious and could mean a safety issue.

Possible causes:

• Electrical wiring damage
• Overheating components
• Gas leak

Fix:
Turn off the unit immediately and book an emergency service.

FAQs

In the hot weather of Singapore, an a well-functioning and efficient air conditioner is more of a necessity than a luxury. The aircon problems discussed above are the most common issues reported by users. However, it should be noted, that none of these issues are too much expensive if recognized and treated at the right time. Regular maintenance and timely repairs are essential for ensuring your aircon operates efficiently and reliably at all times. If any of these issues are faced, seek professional assistance for the benefit of your aircon and your household who will help you with the best solution.

Are you hearing a loud clanking, rattling or buzzing noise from your AC compressor? A noisy compressor can not only be annoying but can also indicate underlying issues that need your attention. In this article, we will explore the top five reasons for a noisy aircon compressor and provide solutions to help you enjoy a quieter and more efficient cooling experience.

1. Malfunctioning Compressor Motor

A malfunctioning compressor fan motor is the number one reason for your compressor to be noisy. The compressor motor is a vital component of your air conditioning system. When it starts to malfunction or fail, it can generate various noises, such as clicking, banging, or even high-pitched screeches. Common causes of a malfunctioning compressor motor include wear and tear over time, electrical issues, or overheating due to a lack of maintenance.

Fix

To address a malfunctioning compressor motor, it’s essential to consult a professional HVAC technician. They will assess the situation and may recommend one of the following solutions:

• Motor Repair: In some cases, the motor might be repairable by replacing specific components. Repair costs can vary but typically range from $200 to $600, including labor.
• Motor Replacement: If the motor is severely damaged, it might need to be replaced. The cost of a compressor motor replacement ranges from $500 to $1,500, including parts and labor.

2. Bent Or Misaligned Compressor Fan Blades

The compressor fan blades play a crucial role in air circulation within the unit. When they become bent or misaligned, they can generate various noises, such as rattling, clicking, or scraping. This issue can occur due to accidental impacts, debris getting caught in the fan, or natural wear and tear.

Fix

Resolving bent or misaligned fan blades usually involves one of the following:

• Blade Straightening: In many cases, a technician can straighten the blades, which is a cost-effective solution. Blade straightening typically costs around $100 to $200, including labor.
• Blade Replacement: If the fan blades are severely damaged, they may need to be replaced. The cost for new blades can range from $150 to $300, including parts and labor.

3. Overused Compressor

An overused compressor can put excessive stress on various components within the unit, causing screws, bolts, or other parts to become loose or damaged. This can result in noises like rattling or clanking. Overuse is often a result of not following a proper maintenance schedule, including neglecting cleaning and servicing.

Fix

Fixing this issue typically involves:

• Tightening Loose Components: A technician can tighten any loose screws, bolts, or components. This part of the repair may cost around $100 to $200, including labor.
• Component Replacement: If parts are severely damaged, they should be replaced. The cost for this type of repair can vary significantly, depending on the extent of the damage and the specific components that need replacement. It may range from $150 to $500 or more.

In all cases, it’s crucial to consult a professional HVAC technician to accurately diagnose and resolve these issues. Attempting DIY repairs can lead to further damage and may void your warranty. Professional technicians have the expertise and experience to ensure the safe and effective repair of your aircon compressor. The estimated costs provided are approximate and may vary depending on your specific situation and location.

The unique climatic conditions of Singapore, demands an efficient aircon system that will work consistently to keep the indoor spaces cool and comfortable.

According to air-conditioning experts, aircon maintenance and inspection should be done at least once every three months even if the unit is not faulty. This is crucial in assuring that the air conditioner will run as efficiently as possible.

Major Benefits of Regular Aircon Servicing

1) Increases System Efficiency

If general servicing is done at a regular interval, it helps to maintain the efficiency of the air conditioner. With time, dust particles and debris accumulates on the coils and filters thereby reducing its efficiency. To make the air cool down, the unit then has to work harder resulting in increased energy consumption. Regular maintenance will ensure your unit remains at peak performance, by cooling the air faster and have more efficient power consumption.

2) Purifies Indoor Air Quality

It is very important that the air we breathe in is fresh and purified. Air conditioners, over time start to accumulate dust, dirt and debris which can easily get circulated into your home atmosphere, leading to various health issues such as allergies or respiratory problems. If Aircon servicing is done at regular intervals, a thorough cleaning of the dirt and other impurities that have accumulated on the filters and evaporator coil is guaranteed. Hence you and your loved ones get a purified dust free fresh air.

3) Extends Aircon Longevity

It is important to understand that just like any other mechanical device, an aircon also needs timely servicing. Lack of regular maintenance, will lead its parts to wear out over time and the lifespan of the aircon may reduce to only a few years. On the other hand, if regular servicing is conducted, it can increase the longevity of your aircon up to 15 to 20 years. Considering the hot and humid climate of Singapore, it is recommended to do a general servicing every 3-4 months. This will in turn lengthen the lifespan of your unit thereby bring down your overall expenses.

4) Protection against Infections

Air conditioners can become breeding grounds for mold, bacteria, fungus, unwanted pests and allergens resulting in contaminated air from the aircon unit. This will naturally result in a foul smell and can even make you fall sick. A regular cleaning and maintenance will help to protect the unit from this breeding of infectious germs.

5) Save on Electricity Bills

The aircon will function at it’s peak if the unit is clean. The cleaner the aircon is, the highest will be its efficiency level leading to a faster cooling. Faster cooling implies more efficient power consumption and less electricity bills to pay.

6) Prevent Breakdowns

By doing a routine maintenance, the professionals can easily identify potential issues and thereby prevent them from eventually turning into major problems or a major breakdown. This proactive approach can prevent unexpected breakdowns and costly repairs.

7) Value for Money

Regular servicing is cost effective as it helps to save your money in many ways. It helps to reduce power consumption thereby saving you on electricity bills. Again, it helps to purify the air you breathe in thus saving you the cost of doctor visit and ill health. Also the expenditure on highly expensive chemical overhaul and repairs are minimized with routine cleaning and maintenance.

8) Provide proof of Aircon servicing or get a Service Record

In Singapore, many house owners or landlords asks for a proof of regular aircon servicing, from their tenants. If regular servicing is done, the service provider can issue the Service Record or the proof of service which will help in your tenancy agreement with your landlord.

What happens if air conditioner is not serviced?

If the air conditioner unit is not serviced at regular intervals, it will surely be inefficient and not be able to cool the space, even after remaining on for hours. This will naturally result in – high electricity bills, non-functional aircon and expensive repairs!

In Singapore’s climate, where air conditioners are more of a necessity rather than a luxury, regular servicing is vital. Scheduled maintenance of aircons ensures energy efficiency, prolongs the lifespan of your unit, and improves indoor air quality. Moreover, it also prevents health issues and costly repairs for breakdowns. Hence, to enjoy the full benefits of your air conditioner and maintain a comfortable and healthy living environment, make sure to schedule regular servicing with a trusted professional. It’s an investment that pays off in both the short and long term, ensuring that you stay cool and comfortable in Singapore’s hot and humid weather.

Singapore’s tropical climate can make air conditioning a necessity rather than a luxury, especially in rental properties. To ensure a comfortable living environment, it’s crucial to address aircon servicing and repairs promptly. But who bears the responsibility for aircon servicing and repairs in rental properties in Singapore? In this article, we’ll explore the common questions and issues surrounding aircon servicing in rental properties.

Do Tenants or Landlords Service Aircon in Singapore?

The responsibility for aircon servicing in Singapore rental properties often depends on the terms outlined in the tenancy agreement. Typically, landlords are responsible for the initial servicing and maintenance of air conditioning units before a new tenant moves in. This includes ensuring that the aircon units are clean and in good working condition.

Who Should Pay for Repairs: Landlord or Tenant?

When it comes to repairs, the general rule is that landlords are responsible for major repairs and replacements due to normal wear and tear. This includes issues like compressor failure, motor problems, or leaks. However, if the tenant is found to be responsible for the damage, or has not followed the regular aircon service terms as per the tenancy agreement, they may be liable for the repair costs.

Should Tenants Pay for Aircon Repair?

Tenants are usually not responsible for the cost of repairing air conditioning units if the damage is not due to their negligence or misuse. However, tenants are expected to report any issues with the aircon promptly to the landlord to prevent further damage and ensure timely repairs.

Who Pays for Aircon Servicing?

Regular aircon servicing, such as cleaning the filters and checking for minor issues, is typically the responsibility of the tenant during the tenancy period. It’s essential for tenants to maintain the cleanliness of the air conditioning units to ensure they function efficiently. Some tenancy agreements may specify a schedule for aircon servicing, so tenants should review their lease to understand their obligations.

Do Tenants Have to Do Aircon Chemical Servicing After the End of the Tenancy Period?

Aircon chemical servicing is a more extensive and thorough cleaning process that involves dismantling and cleaning various components of the air conditioning unit. In most cases, tenants are not responsible for aircon chemical servicing after the end of the tenancy period unless specified otherwise in the tenancy agreement. It’s typically the landlord’s responsibility to ensure the unit is in good condition for the next tenant.

Tips for Tenants and Landlords:

1. Read and Understand the Tenancy Agreement: Both tenants and landlords should carefully read and understand the terms of the tenancy agreement regarding aircon servicing and repairs. If there are any ambiguities, consider clarifying these points before signing the contract.
2. Regular Maintenance: Tenants should perform regular maintenance, such as cleaning filters, to ensure the air conditioning units function optimally. This can help prevent major issues and prolong the lifespan of the units.
3. Document and Report Issues: Tenants should promptly report any aircon issues to the landlord and document the condition of the unit during move-in and move-out to avoid disputes over damages.
4. Communication is Key: Landlords and tenants should maintain open and clear communication regarding aircon servicing and repairs to ensure a comfortable living environment for the tenant and the longevity of the equipment.

In Singapore, the responsibility for aircon servicing and repairs in rental properties is primarily determined by the terms of the tenancy agreement. Landlords generally bear the responsibility for major repairs and initial servicing, while tenants are typically responsible for regular maintenance and minor issues during the tenancy period. To avoid disputes and ensure a pleasant living experience, both landlords and tenants should understand their obligations and communicate effectively when it comes to air conditioning maintenance and repairs.

When you encounter blinking lights on your air conditioner’s control panel, it’s like a secret language that your AC unit is speaking to you. These blinking lights often come in different colors, with green, orange, and red being the most common. In this article, we’ll dive into what these different-colored blinking lights signify and emphasize the importance of consulting your aircon’s user manual to decode the specific messages.

Understanding Blinking Light Colors

1. Green Blinking Lights: Green blinking lights typically indicate that your air conditioner is operating normally or that a specific feature, like the fan or timer, is activated. It’s usually nothing to be concerned about, but it’s a good idea to check your user manual for more details on what the specific green blink pattern means for your unit.
2. Orange Blinking Lights: Orange blinking lights usually indicate a minor issue or a system alert. These alerts might include reminders to clean or replace filters, a warning about reduced refrigerant levels, or notification of an impending maintenance schedule. While orange blinks are generally not an emergency, they should prompt you to consult your user manual for guidance on addressing the specific issue.
3. Red Blinking Lights: Red blinking lights are the most critical and typically indicate a serious problem with your air conditioner. This could range from a major technical fault to a refrigerant leak or other significant issues. When you see red blinking lights, it’s crucial to consult your user manual immediately, as the AC unit might require professional attention.

Common Blinking Light Patterns and What They Mean

1. Power Indicator Blinking: If the power indicator light on your AC unit blinks, it could indicate a problem with the power supply or a tripped circuit breaker. Check your circuit breaker, power source, and ensure the unit is properly plugged in.
2. Temperature Indicator Blinking: Blinking temperature indicators often signify a fault with the thermostat sensor. This can result in erratic temperature control. The sensor may need cleaning or replacement.
3. Timer Light Blinking: When the timer light blinks, it usually means that the timer function has been activated. Check your remote control settings and turn off the timer if it’s not intended.
4. Filter Indicator Blinking: A blinking filter indicator typically indicates that it’s time to clean or replace the air filter. A clogged filter can reduce efficiency and affect air quality.
5. Error Code Display: Some AC units display specific error codes, such as E1, E2, or E3. Refer to your unit’s manual to decode these error codes, as they can vary depending on the manufacturer. These codes are invaluable for diagnosing specific issues.

Daikin Error Codes Mitsubishi Electric Error Codes

Aircon blinking lights are a valuable tool for understanding the health and status of your air conditioning system. By decoding these indicators, you can often pinpoint and address issues before they become major problems, helping you maintain a comfortable and efficient indoor environment. Remember that regular maintenance, such as cleaning or replacing filters, can go a long way in preventing many common AC issues signaled by blinking lights. When in doubt, don’t hesitate to seek professional assistance to ensure your AC unit operates optimally.

Air conditioning systems are a welcome relief for the hot tropical climate in Singapore, but when you notice your AC pipe is leaking water, it can quickly turn into a frustrating and sometimes costly problem.

Top 3 Reasons for Aircon Pipe Leaking Water

1. Clogged Drain Line: One of the most common causes of aircon pipe leaks is a clogged drain line. Over time, dirt, debris, and algae can accumulate in the drain line, obstructing the flow of water. When the drain line becomes blocked, water backs up into the system, leading to leaks.
2. Improper Installation: A poorly installed air conditioning system can lead to various issues, including leaks. If the condensate drain line is not correctly positioned or if there are other installation errors, water leakage can occur.
3. Damaged or Corroded Drain Pipe: Air conditioning systems utilize a drain pipe to transport condensate away from the unit. If this drain pipe becomes damaged or corroded over time, it can develop leaks, causing water to escape from the system.

Repairing an Aircon Drain Pipe Leak

• Turn Off the Unit: The first step is to turn off the air conditioning unit to prevent further damage and ensure safety.
• Inspect and Identify the Issue: A professional technician will inspect the system to identify the specific cause of the leak. This may involve checking the drain line, evaporator coil, drain pan, and refrigerant levels.
• Clear Blockages: If the issue is a clogged drain line or drain pan, the technician will clear the blockage and ensure proper drainage.
• Replace Damaged Parts: In cases where components like the drain pipe are damaged or corroded, they will need to be replaced to prevent future leaks.
• Test the System: After the necessary repairs, the technician will test the system to ensure it’s functioning correctly and that there are no more leaks.

Cost of Repairing an Aircon Drain Pipe Leak

The cost of repairing an aircon drain pipe leak can vary widely based on factors such as the extent of the damage, the specific repairs needed, and your location. On average, you can expect to pay anywhere from $100 to $500 for a basic repair. However, if significant component replacement or extensive refrigerant work is required, the cost could exceed $1,000.

It’s important to note that regular maintenance can help prevent many aircon drain pipe leaks, potentially saving you money in the long run. Regular cleaning of the drain line and changing air filters are simple steps that can go a long way in preventing issues.

An aircon drain pipe leaking water can be a frustrating problem, but with prompt attention and professional repairs, it can be resolved. Regular maintenance and attention to warning signs can help prevent such issues and ensure your air conditioning system runs efficiently throughout the year. If you suspect a leak, it’s always best to consult with a qualified A/C technician to diagnose and repair the problem correctly. Additionally, be sure to check for damaged or corroded drain pipes as they can also be a source of water leaks in your air conditioning system.