My room isn’t cooling—what gives?

Aircon Servicing

Is your air conditioner running, but your room still feels warm and stuffy? This can be both frustrating and uncomfortable—especially in Singapore’s tropical climate where a functioning AC is essential for everyday comfort. If your room isn’t cooling properly, don’t sweat it just yet. There are several reasons why this could be happening, and most of them are fixable with the right knowledge and support.

At LetsCool Aircon and Services, we’ve encountered all sorts of aircon cooling issues in our 25+ years of industry experience. Below, we break down the most common causes behind poor cooling and offer practical solutions to restore your comfort quickly and efficiently. View more.

1. Dirty Air Filters – The Most Overlooked Culprit

Clogged or dirty filters are one of the most frequent causes of aircon inefficiency. Over time, dust, dirt, and pet hair accumulate in the filter, restricting airflow. When your system can’t breathe, it can’t cool your room effectively.

• Solution:

Have your air filters cleaned or replaced regularly. LetsCool Aircon and Services recommends filter cleaning at least once every month and full servicing every 3 to 6 months, depending on usage.

2. Incorrect Thermostat Settings

Sometimes, the issue is as simple as having the thermostat set incorrectly. If it’s accidentally set to "fan" mode or the temperature is too high, your aircon might run but won’t cool the room.

• Solution:

Double-check your remote settings. Ensure that the aircon is set to "cool" mode and that the desired temperature is at least 5 degrees below the room’s ambient temperature.

3. Low Refrigerant Levels

The refrigerant is the chemical that absorbs heat from your room and expels it outdoors. If your system is low on refrigerant, your aircon will blow air—but it won’t be cold.

This could indicate a leak, which needs urgent attention from certified professionals.

• Solution:

Contact LetsCool Aircon and Services in Singapore to conduct a full refrigerant level check and leak test. If needed, our technicians will recharge the refrigerant and repair any leakage, ensuring optimal performance.

4. Dirty or Blocked Condenser Coils

The outdoor unit of your aircon system (also called the condenser) releases the heat extracted from your room. When the condenser coils are dirty or blocked by debris, the unit can’t release heat effectively—resulting in poor cooling indoors.

• Solution:

Our team at LetsCool Aircon provides thorough condenser cleaning as part of our regular servicing packages. We ensure the outdoor unit is free of leaves, dust, and grime, restoring full functionality.

5. Undersized Aircon for Your Room

Not all aircon units are created equal. If your unit is too small for the room size, it won’t be able to cool it efficiently no matter how long it runs.

• Solution:

We offer free, non-obligatory site surveys to assess your cooling needs. LetsCool Aircon and Services can recommend the right aircon system (System 1, 2, 3 or 4) based on your room size, layout, and usage patterns.

6. Leaky or Poorly Insulated Room

Even the best aircon can’t perform well if the room isn’t properly sealed. Gaps in windows, poorly closed doors, or inadequate insulation can allow cold air to escape and warm air to enter, undermining your aircon’s cooling efforts.

• Solution:

Inspect your room for air leaks, especially around windows and doors. Consider adding insulation or using thermal curtains. For more guidance, our technicians can help identify problem areas during a service visit.

7. Blocked or Faulty Aircon Vents

Blocked vents prevent cold air from circulating freely, while malfunctioning louvers or broken fans can reduce airflow direction and coverage.

• Solution:

Ensure furniture or curtains are not blocking the aircon vents. If airflow seems weak or uneven, contact LetsCool Aircon for a full inspection. We can repair or replace faulty fan motors and louver mechanisms.

8. Aging or Malfunctioning Aircon Unit

If your aircon is more than 8–10 years old, its components may be worn out or outdated, leading to inefficient cooling and frequent breakdowns. While minor repairs may help, it may be more cost-effective to replace the unit entirely.

• Solution:

We offer expert advice on whether your aircon is worth repairing or replacing. LetsCool Aircon and Services installs all major brands including Mitsubishi Electric, Daikin, Panasonic, and Midea with full warranty and professional support.

Why Choose LetsCool Aircon and Services?

With over two decades of experience in Singapore’s aircon industry, LetsCool Aircon and Services provides:

• Skilled, professionally trained technicians

• 24/7 support and prompt response times

• Transparent pricing with no hidden charges

• Free site surveys for accurate aircon recommendations

• Comprehensive services from basic servicing to chemical overhauls and full installations

We understand how important a cool, comfortable indoor environment is in Singapore’s hot and humid climate. Whether it’s a small issue or a major system failure, we’re committed to restoring your comfort with reliable, affordable, and top-quality service.

Final Thoughts

A room that doesn’t cool properly is more than just an inconvenience—it could be a sign of deeper issues with your air conditioning system. Thankfully, most problems have simple solutions when handled by professionals.

Don’t let a malfunctioning aircon disrupt your day. If your room isn’t cooling the way it should, call LetsCool Aircon and Services in Singapore at +65 9862 3678. We’re here to help—fast, friendly, and always professional.

11 Mandai Estate,

#05-15 Eldix,

Singapore 729908

Mail ID: info@letscoolaircon.com.sg

Call: +65 9862 3678 (or) WhatsApp us: https://wa.me/6598623678

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BrindhaSEO is a passionate content writer with a knack for crafting engaging and informative articles. With a background in digital marketing,