The Shift From R410A to R32 in UK Air Conditioning
The UK air conditioning market has been transitioning from R410A to R32 for several years. Understanding the differences between these two refrigerants helps engineers, installers and building managers make informed decisions about new installations and system replacements.
Side-by-Side Comparison
| Property | R410A | R32 |
| GWP | 2088 | 675 |
| Flammability | A1 (non-flammable) | A2L (mildly flammable) |
| Typical charge | Higher | 30% lower |
| Efficiency (COP) | Good | Better at high ambient |
| Phase-down status | Tightening quota | Permitted — lower GWP |
Why R32 Is Now Standard for New AC
The combination of lower GWP, reduced charge weight and equal or better energy efficiency makes R32 the clear choice for new split AC and multi-split installations. All major manufacturers — Daikin, Mitsubishi, Fujitsu, LG and Samsung — have transitioned their domestic and light commercial ranges to R32.
Can Existing R410A Systems Be Converted to R32?
No. R410A and R32 operate at different pressures and have different compressor oil requirements. Converting an existing R410A system to R32 requires replacement of the entire refrigerant circuit and compressor — effectively a new system. Existing R410A equipment should continue to use R410A until the end of its service life.
Buying R32 and R410A in the UK
We supply both R32 9 kg cylinders for new installations and R410A 10 kg refillable cylinders for servicing the existing installed base. Browse our full refrigerant gas range.
