A refrigerant blend is two or more refrigerants mixed together to form a new refrigerant. All 400 Series refrigerants (e.g., R-404A, R-448A, R-449A) are classified as blended refrigerants. One of the ...

Charging a refrigeration system is one of the most challenging and puzzling tasks a service technician will face. How much refrigerant a technician should put into a system when charging is a tough ...