Keeping your home cool and comfortable relies on the efficiency of your split system air conditioner. But what happens when your aircon isn’t performing as it should? One common question homeowners ask is whether their split system needs regassing.
Regassing refers to replenishing the refrigerant that helps your split system air conditioner cool your space effectively. While it’s not something that should happen frequently, certain signs like reduced cooling or unusual noises might indicate an issue.
In this blog, we’ll explore when regassing is necessary, how it works and what you can do to keep your air conditioner running smoothly.
What is Regassing and How Does It Work?
Regassing is the process of replenishing the refrigerant in an air conditioning system, a key substance that absorbs and releases heat to keep your space cool.
In a split system air conditioner − whether it is reverse cycle or cooling only − refrigerant circulates through a closed-loop system of coils, transferring heat from inside your home to the outside. Ideally, this refrigerant never runs out, as the system is designed to be sealed.
Generally, people think only a car air conditioner needs regassing. This happens more frequently because there is greater wear and tear on a car’s AC unit.
Similarly, your home’s split system might need regassing if there’s a leak in the refrigerant lines. However, unlike car air conditioners, home systems are stationary and less prone to damage from movement, so regassing is typically less frequent. If your system isn’t cooling properly, it’s worth checking for leaks before considering a regas.
Signs Your Split System Might Need Regassing
If your split system air conditioner isn’t performing as it should, it might be time to check the refrigerant levels. Here are some common signs that could indicate your system needs regassing:
- Reduced cooling performance: Your air conditioner is struggling to cool your space, even when set to the lowest temperature.
- Higher energy bills: A low refrigerant level makes your system work harder, leading to increased electricity consumption.
- Warm air from vents: Instead of blowing cool air, the unit may push out warm or lukewarm air.
- Hissing or bubbling noises: Unusual sounds could signal a refrigerant leak in the system.
- Ice build up on coils: Low refrigerant can cause the evaporator coil to freeze, leading to visible ice or frost.
- Frequent cycling: The air conditioner turns on and off more often than usual without properly cooling the space.
If you notice any of these signs, it’s essential to have a professional inspect your unit. Regassing alone won’t fix the problem if there’s an underlying leak.
Do Split Systems Lose Gas Naturally?
Unlike a fuel tank that gradually empties, split system AC units don’t naturally lose refrigerant over time. These systems are designed to operate with a sealed refrigerant loop, meaning the gas inside should stay put as long as the system is intact. However, problems can arise when there’s a leak.
Leaks can occur due to wear and tear, corrosion or physical damage to the refrigerant lines. Once a leak happens, refrigerant levels drop, leading to reduced cooling efficiency and potential strain on the system. If left unchecked, this can even damage your compressor, which is costly to replace.
Regular maintenance is crucial to ensure your system stays leak-free. A professional technician can inspect for weak spots or damage in the refrigerant lines and address small issues before they become major problems. Remember, losing refrigerant isn’t normal − it’s a sign that your system needs attention.
What Happens If the AC Runs Low on Refrigerant?
When your split system air conditioner runs low on refrigerant, its ability to cool your home is significantly compromised.
Refrigerant is essential for absorbing and transferring heat, so without enough of it, your system struggles to do its job. You might notice warm air blowing from the vents, or it might take much longer to cool a room.
Low refrigerant also forces your air conditioner to work harder, which increases energy consumption and can lead to higher electricity bills.
Over time, this added strain can cause internal components, like the compressor, to overheat or fail completely − a costly repair or replacement.
Additionally, low refrigerant often indicates a leak in the system, which can worsen if ignored. These leaks are not only bad for your air conditioner but can also release harmful gases into the environment.
If you suspect your system is running low on refrigerant, it’s essential to call a professional heating, ventilation and air conditioning (HVAC) technician for inspection and repair.
How is Regassing Performed?
Regassing your split system air conditioner is a job that must be carried out by a licensed HVAC professional.
Here’s a step-by-step overview of how the process is typically carried out:
- System inspection: The technician begins by examining the unit for signs of leaks or damage. Identifying and fixing leaks is crucial before adding more refrigerant.
- Refrigerant removal: If there’s remaining refrigerant, it may need to be safely extracted to avoid overcharging the system.
- Leak repairs: Any leaks found during the inspection are sealed or repaired to ensure the system can hold the new refrigerant.
- Vacuum testing: The system is vacuumed to remove air and moisture, which could affect performance or cause damage.
- Refilling refrigerant: The correct type and amount of refrigerant are added, following manufacturer specifications.
- Performance check: The technician tests the system to confirm proper cooling and efficiency.
A professional approach ensures your air conditioner operates safely and effectively without future issues.
How Often Does a Split System Need Regassing?
Split system air conditioners don’t need regular regassing under normal conditions. These systems are designed with a sealed refrigerant loop, meaning the gas should last for the lifetime of the unit − provided there are no leaks or damage. If your system is losing refrigerant, it’s usually a sign of a problem, such as a cracked pipe or a worn-out seal.
How often regassing is required depends on the system’s condition and how well it’s maintained. For a well-kept unit, regassing might never be necessary. However, older systems or those that experience frequent wear and tear could require it sooner if leaks develop.
Regular professional servicing is key to preventing the need for regassing. A technician can check for potential leaks and ensure your system is operating efficiently. If you find your aircon struggling to cool effectively, don’t assume it’s time to regas − let a professional diagnose the issue first.
Can You Prevent the Need for Regassing?
While regassing isn’t a regular requirement for split system air conditioners, you can take steps to minimise the chances of needing it.
Here’s how to keep your system in top shape:
- Schedule regular maintenance: Have your air conditioner professionally serviced by an HVAC technician at least once a year. A technician can inspect for leaks and ensure everything is running smoothly.
- Check for early signs of leaks: Keep an eye out for reduced cooling, strange noises, or ice build up. Addressing these issues early can prevent more significant problems.
- Keep the outdoor unit clear: Ensure the external unit is free from debris, such as leaves or dirt, to reduce strain on the system.
- Protect refrigerant lines: Inspect the refrigerant lines periodically and ensure the insulation is intact to prevent wear and tear.
- Avoid overloading the system: Don’t run the air conditioner at extreme temperatures for extended periods − it can increase wear and tear.
Proactive care can save you time, money and the hassle of regassing.
Recognise the Warning Signs
Split system air conditioners are a reliable way to keep your home comfortable, but they require proper care to function at their best.
While regassing isn’t something that should happen often, understanding the signs of low refrigerant and addressing leaks promptly can prevent unnecessary costs and downtime.
Regular maintenance by a licensed technician is the key to keeping your system efficient and avoiding issues like leaks or refrigerant loss.
If you suspect your air conditioner needs regassing, don’t hesitate to contact a professional technician for an inspection. With the right care, your split system can keep you cool for years to come.
Please note: Thanks for reading our blog “Do Split Systems Need Regassing? What You Need to Know”. This information is provided for advice purposes only. Regulations differ from state to state, so please consult your local authorities or an industry professional before proceeding with any work. See our Terms & Conditions here.