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8 Common Misconceptions About Aircon Gas Topping in 2024

In the evolving arena of home maintenance, the proper care of aircon units remains a top priority for homeowners. However, as technology advances and practices change, so do the misconceptions. Particularly, you need to avoid misconceptions about aircon gas topping because they can lead you to a false flag operation on your aircon. In this article, we will discuss eight common misconceptions about aircon gas topping in 2024, providing clarity on best practices and discarding outdated beliefs.

Common Misconceptions about Aircon Gas Topping

Below are the most common misconceptions about aircon gas topping:

Misconception 1: Frequent Aircon Gas Refilling is Normal

It is a common misconception that aircon gas top ups occur frequently. However, your aircon’s refrigerant or gas should not need frequent topping up. In a properly operating system, the refrigerant is in a closed loop, and its levels should stay relatively stable. This is because the gas refills when the aircon unit operates. Frequent gas topping may indicate a leak or an issue that requires your attention.

When refrigerant levels are constantly low, it’s a clear sign that the system is losing refrigerant, and simply topping it up without knowing the root cause is of no practical use. While it might provide a temporary solution, the problem will persist, resulting in more significant problems in the future. It’s better to consult with a professional HVAC technician to identify and resolve the source of the leak. You can visit our SERVICES PAGE for professional assistance.

Misconception 2: DIY Gas Topping is Safe and Effective 

With the available online knowledge, many homeowners try do-it-yourself (DIY) aircon gas top ups. However, handling refrigerants is a task that requires special skills, knowledge, and equipment. Refrigerants are not only important for the cooling process but can also be hazardous to human health and the environment if mishandled.

Professional HVAC technicians are trained to handle refrigerants safely, following industry regulations and guidelines, and using the required equipment. If you require aircon gas top up service in Singapore, visit our home page.

misconceptions about aircon gas topping

Misconception 3: All Refrigerants Are the Same

One of the strange myths about aircon gas topping is the belief that all refrigerants are interchangeable. As we are in 2024, the world is moving towards environmentally friendly refrigerants due to concerns about ozone depletion and global warming potential. Modern systems often use refrigerants with lower environmental impact.

It’s, therefore, important for homeowners to be aware of the specific refrigerant their system requires and to ensure that only compatible refrigerants are used. Using an incompatible type of refrigerant can lead to inefficiencies, damage to the system, and environmental concerns. Stay informed about the latest regulations and recommended refrigerants for your HVAC system.

Misconception 4: Aircon Gas Top Up Fixes All Cooling Issues

It is one of the most common misconceptions about aircon gas topping that it fixes all the cooling issues of your aircon unit. You can put it the right way: Low refrigerant levels impact the cooling efficiency of your air conditioning system. Aircons are complex systems with various components working in synchronism, and low refrigerant levels are just one potential cause of cooling problems.

Before jumping to aircon gas refilling, it’s essential to identify the issue accurately. Problems like a malfunctioning compressor, clogged air filters, or issues with the thermostat can also result in poor cooling performance. A comprehensive inspection by a professional HVAC technician is a permanent solution. 

Misconception 5: Refrigerant Never Needs Replacing

One of the most heard myths about aircon gas topping is that the refrigerant is a lifelong component of an aircon. The reality is that it can degrade over time or become contaminated. Routine maintenance checks can help identify when a complete refrigerant replacement is required to maintain the system’s efficiency.

Refrigerant degradation can occur due to factors such as moisture influx, chemical reactions within the system, or the accumulation of debris and dust particles. Ignoring the condition of the refrigerant can lead to decreased system efficiency and increased energy consumption.

Misconception 6: Adding More Refrigerant Boosts Cooling Performance

One of the most common misconceptions about aircon gas topping is that adding more refrigerant will enhance the cooling performance of the aircon system. In reality, the refrigerant charge is carefully calibrated to the manufacturer’s specifications to maintain optimal efficiency. Exceeding these levels can lead to decreased efficiency, increased energy consumption, and possible damage to the compressor.

Overcharging the system can also result in a phenomenon known as “slugging,” where liquid refrigerant enters the compressor. This can affect the compressor and compromise the overall performance of the aircon.

aircon gas top up

Misconception 7: All Leaks Are Visible

Many homeowners think that refrigerant leaks are always visible, marked by noticeable oil stains, hissing sounds, or visible damage to the refrigerant lines. At the same time, this is only true for some of the problems and not all.

Professional HVAC technicians use particular tools such as electronic leak detectors and UV dyes to identify and locate refrigerant leaks. These tools enable technicians to locate the source of the leak, whether it’s in the evaporator coil, condenser coil, or refrigerant lines. Relying solely on visible signs can result in overlooking hidden leaks.

Misconception 8: Aircon Gas Topping is a One-Time Job


Another myth regarding aircon gas top up is that it requires to be included in the routine maintenance. This is not true! Your aircon gas refill is one of the most crucial components of care. Your aircon may only work correctly if regularly topped off with gas. This is important for optimal energy consumption and cooling efficiency of the unit.


As we are in 2024, homeowners must understand the realities of the misconceptions about aircon gas topping. Discarding common misconceptions empowers individuals to improve their decision-making about the maintenance of their aircon systems. Remember, it is always better to find an expert and seek professional assistance if you have a hint of a doubt. This will maintain your unit in good health and you in your peace of mind.