The IOR Safety Code of Practice for Non Flammable, Lower Toxicity Refrigerants (Group A1) has been updated by the IOR as a reference source and guide to interpretation of the latest standards and regulations.

The publication provides essential industry guidance for owners, designers, installers and operators of vapour compression refrigerating systems that use any A1 image for webgroup A1 refrigerants which include HFC and HFC blends. It covers properties of refrigerants, decommissioning, testing and maintenance as well as design issues with useful appendices such as typical schedules for inspection and maintenance, system register details, machinery rooms, definitions and an updated list of relevant standards.  The Code has been prepared by the IOR Technical Committee as a reference source and guide to interpretation of current safety standards such as BS EN378:2016 and legal requirements such as F Gas, PED, PSSR.  

The IOR publishes four Safety Codes of Practice specific to refrigerant type - all available free to IOR members.

The remaining Codes are under revision and are due to be reissued in April 2018.

  • Non Flammable, Lower Toxicity Refrigerants Group A1
  • Flammable Lower Toxicity Refrigerants Group A2L, A2 and A3
  • Carbon Dioxide R744
  • Ammonia R717 

Download or purchase the Code here

 

 

Recent posts

About

About the IOR

23 Apr 2026

The Institute of Refrigeration is the professional engineering body for all individuals working in RACHP. Find out more about the IOR here. 

News
What We Do

What we do

23 Apr 2026

Find out what the IOR can do for you: technical queries, safety codes of practice, new  technologies and professional development.

News
Untitled Design 5

Join us

23 Apr 2026

When you become a member of the Institute of Refrigeration you are joining a group of specialist experts driving the sector forward.

News
Adaptation2027 Square

IOR To Host Adaptation 2027

27 May 2026

The IOR is pleased to announce that the UK has been selected to host the 2nd IIR International Conference in the series on Refrigeration: Adapting to Rising Temperatures (known as Adaptation 2027).

Live event
MemberOfISA

IOR Industry Skills Alliance's New Supporter Badge

26 May 2026

Supporters of the IOR Industry Skills Alliance can now receive their own digital badge displaying their commitment to the future of skills in the RACHP sector.

Education