-
Technical
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
group 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
IOR Industry Skills Alliance: meeting fully booked
2 Mar 2026
Fully Booked - wait list open. The launch of the IOR's Industry Skills Alliance for individuals interested in shaping the future of the skills agenda for the RACHP sector. Find out more about the event and the role of the Skills Alliance here.
Live event
Members invited to feedback on update and review of IOR Constitution
24 Feb 2026
A review of the IOR Constitution has been carried out to ensure it complies with current Charity Commission guidance and improve the wording for clarity. Open for consultation and comment by members until 30th April 2026.
Consultation
Recording Now Available for March IOR TechTalk
9 Mar 2026
The recording for the IOR TechTalk on “Unscrambling the Refrigerant Clutter for the Future” on 5th March is now available from the IOR Webinar Channel.
Recording
EBSSA Sector Skills Plan Launched
3 Mar 2026
The Engineering and Building Services Skills Alliance (EBSSA) published recently their strategic Sector Skills Plan, as part of the work undertaken by the Construction Mission Skills Board.
Education
IOR Technician App Shortlisted for Award
26 Feb 2026
We're delighted to announce that the IOR Technician App has been shortlisted as a finalist for the ACR News Awards in the Training Initiative of the Year Category.
NewsSitemap
