Products Industries We Serve Services Resources Distributors About NRI Technical Support Contact Us HVAC Chillers Chillers are machines used in residential and commercial air conditioning, industrial process cooling, and other processes where refrigerant cools a secondary fluid which is circulated out to the load. NRI supplies refrigerants for low and high pressure chillers as well as propylene glycol used as the secondary fluid. Refrigerants Used in Chillers Low Pressure High Pressure Propylene Glycol Product Resources Download Recovery Containers Ref. Guide Download Lubricant Cross Reference Banking and Reclamation Services Variable Refrigerant Volume (VRV) Variable Refrigerant Volume HVAC systems are the fastest growing market in the industry. VRV systems operate like chillers in that refrigerant circulates throughout the piping instead of a secondary fluid. This allows for installation in large buildings as well as small. Early VRV systems used R-22. Newer systems use R-410A. Manufacturers are looking to use lower GWP and A2L refrigerants such as R-32 in new systems. Refrigerants Used in VRV Product Resources PT Chart Commercial Package Units Commercial package air conditioners and heat pumps have been the standard for large installations for many decades. Many older R-22 systems are still in operation. NRI offers R-22 and R-410A for servicing existing installations. R-407C, R-422B, and R-422D can be used to convert package units from R-22. Refrigerants Used in Commercial Package Units Refrigerants Used to Retrofit or Convert Commercial Package Units Product Resources Download Retrofit Guidelines Download Blends Tutorial PT Chart Commercial Split Systems Commercial split air conditioners and heat pumps are used when the air handler or indoor unit is installed separately from the condensing unit. This is usually done because a package unit is not practical. A large installed base of systems charged with R-22 exists. New air conditioners use R-410A or R-407C. For customers wanting to convert R-22 machines, R-407C is the best choice. R-422B and R-422D can also be used but an oil change is required for any conversion it a HFC. Refrigerants Used in Commercial Splits Refrigerants Used to Retrofit or Convert Commercial Splits Product Resources Download Retrofit Guidelines Download Blends Tutorial PT Chart Residential Split Systems Residential air conditioners and heat pumps have traditionally used R-22 as the refrigerant. With the phaseout of R-22 complete, users of these older systems need to make choices when a leak occurs and refrigerant needs to be added. The supply of R-22 is good and is still the best solution for servicing units designed for it. For customers who want to convert for financial or other reasons, NRI offers several alternatives that can be used. Newer systems use R-410A which is offered at any NRI location. Refrigerants Used in Residential Splits Refrigerants Used to Retrofit or Convert Residential Splits Product Resources Download Retrofit Guidelines Download Blends Tutorial PT Chart Self-Contained Air Conditioners Self-contained air conditioners and heat pumps include window air conditioners, thru-the wall units, Comfort Pack units and package terminal air conditioners (PTAC). Manufacturers discontinued making units with R-22 in 2010 but an enormous installed base still exists. Newer units use R-410A, and R-32 has been approved for use in window units and PTAC’s. NRI has refrigerant solutions for any self-contained air conditioner and can assist customers with conversions from R-22. Refrigerants used in Self Contained Refrigerants Used to Convert Self Contained Product Resources Download Retrofit Guidelines Download Blends Tutorial PT Chart Work with NRI’s Refrigerant Experts When you need someone you can trust with your refrigerant challenges, choose NRI for its variety of services, delivered by the country’s largest, most knowledgeable team. View Our Services Visit National Refrigerants, Ltd., UK Follow us on Twitter Linked In © 2021 | 11401 Roosevelt Blvd, Philadelphia, PA 19154 | 800.262.0012 | info@refrigerants.com