For IIR members only

Revising A3 refrigerants charge limits to promote wider application

A recent IJR paper examines the validity and form of charge limits for “highly flammable” A3 refrigerants, which constitute low-GWP alternatives to HFCs. Authors propose to eliminate upper charge limits for indoor systems whilst retaining allowable charge limits.



In an effort to reduce greenhouse gas emissions, the refrigeration, air conditioning and heat pump (RACHP) industry has been focusing more on the use of hydrocarbons (HCs). HCs are low-GWP alternatives to hydrofluorocarbons (HFCs), with the disadvantage of being more fla...

IIR members only

You must be an IIR member to read the rest of this article.

Members benefit from exclusive advantages and services.

To find out more, please click on the link below:

Already a member?