Return to replace Lennox evaporator coil for whole house system: Pump down system at arrival securing all remaining refrigerant inside condensing unit and shut power to system cut out drain line from existing evaporator coil primary pan cut out line set from existing evaporator coil removed leaking evaporator coil from system cabinet install and set in place brand new evaporator coil braze in line set to new evaporator coil preform nitrogen pressure test on system at 300 psi - okay system holding for 20 minutes check all connections and TXV with bubbles- no leaks release all nitrogen from system and blow out line set and coil throughly removed core valve and connect gauges and vacuum to system and place into vacuum reconnect and install drain line and EZ trap back to new primary pan and cement all connections tested primary pan, drain line, EZ trap, condensate pump and discharge line multiple times to insure normal operations and no leaks- okay system down to 400 microns- holding in v