Aircon Repair Servicing

Installing a new air conditioner should bring instant comfort, especially in Singapore’s hot and humid climate. But many homeowners find themselves asking a frustrating question: “Why is my new aircon system not as cold as expected?” Whether it’s a brand-new split unit or a complete system installation, several factors can affect the cooling performance. Understanding these issues can help you fix the problem early and ensure your aircon works efficiently for years.

Why is My Aircond Not Cold

In this guide, we explore the most common reasons behind poor cooling in new aircon systems and how a reliable company like LetsCool Aircon and Services in Singapore can help you diagnose and resolve these issues quickly.

1. The Aircon Capacity May Not Match Your Room Size

One of the most overlooked factors is whether your aircon has the right cooling capacity (BTU) for the room it serves. A unit that is too small will struggle to cool the space, leading to weak airflow, longer cooling times, and higher energy consumption.

Common signs include:

• Aircon takes too long to cool the room
  
  

• Air feels cool only near the unit
  
  

• Unit runs continuously without reaching the desired temperature
  
  

In Singapore’s climate, room insulation is often minimal, making proper sizing even more critical. Professional installers like Letscool Aircon and Services conduct proper site surveys to determine the right unit size for optimal performance.

• Aircon Not Cold

• Midea Aircon Not cold

• Daikin Aircon not cold

• Mitsubishi Aircon Not Cold

• Panasonic Aircon Not Cold

2. Incorrect Installation or Poor Piping Work

Even if you purchase a high-quality brand, poor installation can ruin the performance of your aircon immediately. Errors such as improper refrigerant piping, poor insulation, incorrect gradient, or loose connections can prevent your unit from cooling as expected.

Some common installation-related issues include:

• Gas leakage due to poorly joined piping
  
  

• Kinks in copper pipes that obstruct refrigerant flow
  
  

• Insufficient insulation causing condensation and reduced cooling

Aircon Gas Top-up singapore

Aircon Steam Cleaning singapore

This is why choosing an experienced company like Letscool Aircon and Services is crucial. With more than years of expertise, their technicians follow a strict step-by-step installation process to ensure your system runs efficiently from day one.

3. The Refrigerant Gas Level May Be Inaccurate

A new system should not come with gas issues—but errors during installation can lead to undercharging or overcharging of refrigerant. Both can cause weak cooling or uneven temperatures.

If your aircon feels cool but not cold, it may be due to:

• Slight refrigerant undercharge
  
  

• Micro-leaks during installation
  
  

• Air bubbles trapped in the pipeline
  
  

A professional gas check from Letscool Aircon and Services can identify and fix gas issues quickly using proper diagnostic tools.

4. Your Airflow Settings or Mode May Be Incorrect

Sometimes the issue isn’t with the unit—it’s with the settings.

Make sure your aircon is set to:

• Cool Mode (snowflake symbol) instead of Dry or Auto
  
  

• Fan speed: Medium or High for better circulation
  
  

• Temperature: 23–25°C, the sweet spot for Singapore’s climate
  
  

Brand-new remote controls often come with default modes that may not produce strong cooling. Adjusting these simple settings can make a noticeable difference.

5. Environmental Factors Affect Cooling Efficiency

Your room’s surroundings can also influence how cold your aircon feels. For example:

• Rooms facing direct sunlight tend to heat up faster
  
  

• Uncovered windows allow heat to enter
  
  

• Heat-generating appliances like computers, induction cookers, or lighting can affect temperature
  
  

• Poor ventilation traps warm air
  
  

Even a high-capacity aircon may struggle if your room naturally retains heat. Installing blinds, curtains, or adding insulation can significantly boost cooling performance.

6. Dirty Filters or Coils—Even on a New Aircon!

This surprises many customers, but even new aircon units can have dusty filters, especially if installation took place during renovation works. Dust, cement particles, and debris can block airflow and reduce cooling.

Signs include:

• Weak airflow
  
  

• Uneven cooling
  
  

• Higher energy bills
  
  

A quick cleaning session from Letscool Aircon and Services ensures your filters and evaporator coil are spotless, helping your unit deliver peak cooling performance.

• Aircon Light Blinking?

• Daikin Aircon Light blinking

• Mitsubishi aircon light blinking

• Midea aircon light blinking

• Panasonic Aircon Orange Light

7. Faulty Thermostat or Temperature Sensor

Some new aircon systems may come with defective sensors or misaligned thermostats. When that happens, the unit may misread the room temperature and reduce cooling prematurely.

Professional technicians can test and recalibrate the temperature sensor to ensure accurate readings.

• Daikin Aircon Error Code

• Mitsubishi Aircon error code

• Panasonic Aircon Error code

• Midea Aircon Error code

8. Brand Differences and Cooling Expectations

Not all aircon brands cool the same way. Some modern units prioritize energy efficiency over extreme coldness. Inverter systems, for example, maintain steady temperatures instead of blasting strong cold air immediately.

If your expectations do not match the model’s design, you may feel the unit is “not cold enough” even when it’s functioning correctly.

• Aircon water Leaking

• Daikin Aircon water leaking

• Midea Aircon water leaking

• Mitsubishi Aircon Water Leaking

• Panasonic Aircon Water Leaking

Consulting with experts from Letscool Aircon and Services helps ensure you choose a system that matches your cooling preferences.

How Letscool Aircon and Services Can Help

If your new aircon system does not feel cold enough, don’t worry—most issues are easy to diagnose and fix. With more than years of experience, Letscool Aircon and Services in Singapore provides:

• Professional Aircon Installation singapore

• Aircon Servicing singapore
  
  

• Gas top-up and leakage checks
  
  

• Airflow and thermostat diagnostics
  
  

• Filter and coil cleaning
  
  

• Expert advice on suitable BTU capacity
  
  

• Honest assessment and transparent pricing

• Aircon Chemical Wash singapore

• Aircon Chemical Overhaul singapore

• Aircon compressor cleaning singapore

Their technicians are trained across all major brands, including Mitsubishi Electric, Mitsubishi heavy,  Daikin, Panasonic, Midea, Hitachi, York, Toshiba, Haier, and Sharp. Whether it's a minor adjustment or a full inspection, their team ensures your cooling system runs efficiently and keeps your home comfortable.

Conclusion

A new aircon system not cooling properly can be frustrating, but the reasons are usually straightforward—from installation issues to incorrect settings or environmental factors. With proper diagnosis and maintenance from Letscool Aircon and Services, you can restore strong, efficient cooling and enjoy maximum comfort in your Singapore home.

If your new aircon isn’t as cold as it should be, don’t wait. Reach out to Letscool Aircon and Services for a professional evaluation and reliable support.

11 Mandai Estate,

 #05-15 Eldix,

Singapore 729908

Mail ID: info@letscoolaircon.com.sg

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

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