Choose a refrigerant filter dryer from Grainger to take contaminants out of your air conditioning system. Use any of these with CFC, HFC and HCFC refrigerant types. A liquid line filter-dryer removes unwanted moisture, acid, debris and wax with minimal resistance to the flow of refrigerant and oil. A suction line filter dryer protects the compressor from debris such as copper pipe filings, braze and solder. Keep your air conditioner running in top shape with a refrigerant filter dryer from Grainger.