Event Calendar This class is a two day class reviewing the current RTUs avaiable. We will cover the 48/50 FC/GC RTUs which… This class is designed to review the operation and troubleshooting of the Carrier/Bryant 2 pipe VRF system. It will cover… This class covers basic changes to refrigerant handling practices due to the upcoming change to 454b. Topics discussed are: plans,… Click Here to register for classes