Technical Center
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Refrigerant know-how and news for technicians, contractors and system owners
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.
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