The new 2022 Refrigeration Manuals is now available. The book contained 750 pages of updated material. It covers the latest new, and retrofittable refrigerants. There are explanations of what refrigerant can be used for different applications, which can be used only on new equipment, and which can be retrofitted to systems currently using refrigerants that are phasing out. There are new additional sections covering Ice Cube Machines, Walk In Box installation, service and troubleshooting. There is also a section covering Blast Freezers.