R427A is a non-toxic, non-flammable, Refregerant gas

R404A is an HFC blend. It is a colourless, non-flammable gas mixture at atmospheric pressure with a slight odour. Supplied in low pressure cylinders. All fluorocarbon refrigerant gases contain one or more carbon and fluorine atoms and are organic compounds. Atoms of chlorine, hydrogen and bromine may also be present.

R134A is an HFC, it is a colourless, non-flammable gas at atmospheric pressure with a slight odour and supplied at low pressure in welded metal cylinders. All fluorocarbon refrigerant gases contain one or more carbon and fluorine atoms and are organic compounds. Atoms of chlorine, hydrogen and bromine may also be present.

R507A is an HFC blend. It is a colourless, non-flammable gas mixture at atmospheric pressure with a slight odour. Supplied in low pressure cylinders. All fluorocarbon refrigerant gases contain one or more carbon and fluorine atoms and are organic compounds. Atoms of chlorine, hydrogen and bromine may also be present.

R410A is odourless, colourless, non-flammable and non-toxic. It operates at higher pressures than many other refrigerants, and so cannot be used to retrofit R22 systems. R410A is odourless, colourless, non-flammable and non-toxic. It operates at higher pressures than many other refrigerants, and so cannot be used to retrofit R22 systems.