R32 Refrigerant


R32, is a single component refrigerant (Introduced end of 2014/2015 in the UK) that has zero ODP gas with a GWP of 675, and classified as A2L (flammable) under ISO 817 & ASHRAE Standard 34 classifications.

R410A Classified as A1 non-flammable refrigerant (Introduced in 2004 in the UK)  has Zero ODP with a GWP of 2088 is a mixture of R32 and R125 (R125 acts a suppresnt to R32's flammability).

R32 Is it Flammable? YES Is it Permanent? NO (2023?)

Is it covered by Standard HSE? NO (Need DSEAR)

Covered by HSE and Building & Fire codes
Currently R410A (non-flammable) refrigerant for all systems (Splits, Multi Split and VRF) since 2004.
No bans (except on sale of split systems with a total charge of less than 3kg by 2025 with 4 year extension if there are technical or safety issues) .[see F-Gas ban]

** Refrierants used in a DX (direct expansion cycle) are circulated (not consumed) to perform efficient energy transfer from inside to outside (cooling) and outside to inside (heaing).

The only release to the atmosphere is due to accidental leaks where F-Gas regulation needs to be adhered to as it is primarily and Environmental qualifications for engineers ensuring Environmentally safe handling of refrigerant.

Introduced in 2015 as a Low GWP of 675 'IF LEAKED**' BUT IT'S FLAMMABLE. Class A2L
It is not covered by Building & Fire codes.
It is not covered under the currant non-flammable HSE. Risk Assesment must be carried out under UK DSEAR or European ATEX


Dangerous Substances & 
Explosive Atmospheres


BSEN 60079-10-1:2015



Labeling is mandatory 
and helps awarenace


Warning signs on all Space Air literatur  for R32 to meet DSEAR Regulations and responsible duty!

Installers / Employers / Owners carry the ultimate legal safety responsibility

see FETA, IOR, BSEN378, EPEE,  

F-Gas CAN NOT cover any competencey on personal or project safety.

Personal safety for A1 & A2L refrigerants require City & Guilds 2709 (A1) & 6187-21 (A2/A2L) or equivelent.

Project installation safety need BSEN378 .


Internationa ISO 817 l & ASHRAE Refrigerant Classification

Important:  F-Gas have nothing to do with flammable or non flammable. It set targets to reduce GWP of refrigerants 

For A2L installer Personal Safety you need:  City & Guilds 6187-21 or equal and approved.

See F-gas Bans and LG Recommendations

It is the responsibility of the installer to ensure equipment have clear labeling and warning that are transparent to end-users, and emergency services. Building owners must ensure that their insurance providers are aware of the risks associated with flammable refrigerants. All are responsible under DSEAR regulations

Q : Can an R32 system explode?  Watch this video (Diesel Effect)


Articals and Papers


- Spencer Fuller is regional sales manager, chiller solutions, building technologies and solutions with Johnson Controls.

- 2014 Fire Hazards of Refrigerants in Air Conditioning Control System International Refrigeration and Air Conditioning Conference

An important website to find out more we highly recommend:



the final solution? :

There two regulations that affect the reduction (phasing down not out) of ALL HFC refrigerants with high or low GWP. 

The  European F-Gas and the International Kigali Amendments to Montreal Protocole.(also called Paris accord)

Space Air Web Site will have more guidance and advice to ensure the correct & Safe use of LG AC equipment utilising R32 Refrigerants. Including FACTS & FIGURES


Space Air Terms & Conditions