Difluoromethane (HFC-32) Technicians beware! Care must be taken regarding refrigerant selection Replacing 'like with like' refrigerant is relatively simple. However, with a number of new refrigerants coming into the market, technicians need to inform themselves of the appropriateness and characteristics of any substitute refrigerant. In the first instance it is critical that refrigerant only be used in equipment that is fit for purpose.
