Technical Center
Refrigerant technical resources — a retrofit guide, TDS/SDS documents and safety guidance for technicians, contractors and engineers.
Retrofit guide
Find replacements for existing systems and compare the GWP of each option
Open → 47 documentsTDS/SDS documents
Request or download technical and safety data sheets
Open → 3 articlesArticles
Refrigerant know-how and news for technicians, contractors and system owners
Open → 39 itemsNeed technical advice?
The ORAFON team can help choose the right refrigerant, recommend replacements and send TDS/SDS documents.
Contact sales →Latest articles
All articles →How to choose a replacement for R-22
R-22 is being phased out. This article summarises options for existing systems (retrofit) and for new equipment, plus what to check before converting.
Read more →What do A1, A2L and A3 mean? Understanding refrigerant safety classes
The ASHRAE 34 safety code shows both the toxicity and flammability of a refrigerant, helping you choose and install it safely.
Read more →What are GWP and ODP? And why do the numbers differ between documents?
The two key figures for a refrigerant's environmental impact, and why GWP values from IPCC AR4 and AR5 are not the same.
Read more →Browse products by refrigerant type
Pick a grade to go to the products we carry
New-generation, ultra-low GWP molecules that break down quickly in the atmosphere
HFO/HFC mixtures with much lower GWP than the refrigerants they replace
Zero ODP, but many grades have high GWP; being phased down under the Kigali Amendment
Mixtures of HFCs formulated for specific applications
Contains chlorine and depletes ozone (ODP > 0); being phased out under the Montreal Protocol
Natural hydrocarbons with ultra-low GWP and good efficiency, but highly flammable
ASHRAE 34 safety classification
The letter shows toxicity (A = lower, B = higher); the number shows flammability
Lower toxicity, non-flammable — standard handling practices
15 gradesLower toxicity, mildly flammable — equipment must be designed for A2L
5 gradesLower toxicity, flammable — keep away from heat and ignition sources
2 gradesLower toxicity, highly flammable — only A3-rated equipment and trained technicians
2 gradesHigher toxicity, non-flammable — requires ventilation and leak detection
1 grades