Do Heat Pumps Need Re-gassing?

If a home heat pump / air conditioner is installed correctly, it shouldn’t need to be re-gassed under normal conditions. There is no such thing as stale gas or expired gas. Gas is sealed inside the system and is designed to last for the entire life of the unit.

If an air conditioner ever needs re-gassing, it means the gas has been lost due to a fault, most commonly a leak. In these cases, the underlying issue should always be identified and repaired by a qualified air conditioning technician before any gas is replaced.

How long does aircon gas last?

An air conditioner gas refill is not needed because it does not get ‘used up’ during normal operation. Unlike fuel, it continuously circulates within the system rather than being consumed. If a system is installed correctly and remains sealed, the refrigerant should last for the life of the unit. 

People often assume the gas has run out when cooling or heating performance drops. In reality, this is usually caused by other issues such as dirty filters, blocked airflow, incorrect settings or mechanical faults. In some cases, a refrigerant leak may develop due to damaged pipework, poor installation or wear over time. When this occurs, the system may need repair and a refrigerant refill, but this isn’t routine maintenance.

How to check AC gas levels

Checking refrigerant (aircon gas) levels is not a DIY task and should only be carried out by a licensed professional. Heat pumps / air conditioners are sealed systems, and handling refrigerant requires specialist tools, training and certification. Attempting to check or top up gas yourself can damage the system, void the warranty and pose safety risks.

How often should you re-gas home aircon

If you suspect a possible gas issue, such as reduced heating or cooling performance, you won’t need to know how to re-gas an aircon. The safest step is to book a professional heat pump / air conditioning service. A qualified technician can accurately test pressures, identify leaks and make any necessary repairs.

For expert assessment and peace of mind, contact us to arrange service with General Airstage (formerly Fujitsu)  trusted technicians, who are trained to keep your heat pump / air conditioning system running safely and efficiently.