Environmental Friendly Refrigerant Gas R410a is your good choice.R410A is a new type of environmentally friendly refrigerant that does not destroy the ozone layer. When cooling or heating, the working pressure is about 1.6 times that of ordinary R22 air conditioners, and the cooling (heating) efficiency is higher. Improve air conditioning performance without destroying the ozone layer. R410A new refrigerant is composed of two quasi-azeotropic mixtures, mainly composed of hydrogen, fluorine and carbon elements (expressed as hfc), which is stable, non-toxic, and superior in performance. At the same time, because it does not contain chlorine, it will not react with ozone, that is, it will not destroy the ozone layer. In addition, the performance of air conditioners using new refrigerants will also be improved to a certain extent. R410A is the most suitable refrigerant to replace R22, which is recognized internationally so far, and it has been popularized in Europe, America, Japan and other countries. Environmental Friendly Refrigerant Gas R410a is your good choice.