If you are researching air conditioning or have an existing system that needs servicing, you will encounter references to R32 and R410A refrigerant. Understanding the difference matters for maintenance, running costs and long-term planning. Here is a clear explanation.
What Is Refrigerant?
Refrigerant is the fluid that circulates in the refrigeration circuit between the indoor and outdoor units — it absorbs heat indoors and rejects it outside. The type of refrigerant affects efficiency, environmental impact and the regulatory requirements for handling and disposal.
R410A — The Previous Standard
R410A was the dominant residential air conditioning refrigerant from the late 1990s until approximately 2015-2020. It replaced R22 (which was phased out due to ozone depletion). R410A has good thermodynamic properties and good efficiency but a very high Global Warming Potential (GWP) of 2088 — meaning a 1kg leak of R410A has the same greenhouse effect as 2088kg of CO2.
Under current and forthcoming F-Gas regulations, refrigerants with GWP above 750 are being phased down. R410A is subject to significant quota restrictions on manufacture and import. The practical effect is that R410A prices have approximately doubled in the past 3 years and will continue to increase.
R32 — The Current Standard
R32 has a GWP of 675 — approximately one-third of R410A’s GWP — and better thermodynamic efficiency, meaning slightly smaller refrigerant charge is needed for equivalent cooling capacity. Most new residential air conditioning systems from 2018 onwards use R32.
R32 has slightly higher flammability than R410A (it is classed as mildly flammable — A2L classification) but this poses no practical risk in normal installation and use. The systems are designed to contain the refrigerant safely and the charge quantities in domestic systems are small.
What This Means for Existing R410A Systems
If you have a system installed before approximately 2018, it likely uses R410A. The system will continue to operate normally — there is no requirement to replace working R410A equipment. However, if your system develops a refrigerant leak and requires recharging, the cost of R410A refrigerant has increased significantly and will continue to rise. Factor this into your repair vs replace decision for older systems.
For New Installations
All new systems we install use R32 or newer lower-GWP refrigerants. R32 systems are slightly more efficient and use less refrigerant charge than equivalent R410A systems. From a long-term running cost and sustainability perspective, R32 is preferable.
Call 07833 053749 or contact us for any refrigerant-related questions. All our engineers hold current F-Gas certification for all refrigerant types.