Completed replacement of the carriage house AC unit. Recovered refrigerant and removed old condenser and coil. Installed a new coil in the plenum above the furnace. Set new AC on existing pad. Flushed the line set and then brazed it to the new equipment. Pressure tested the line set with 500 psi nitrogen to test for leaks, then evacuated to under 500 microns. Released charge then did complete start up procedure adding refrigerant as necessary. Thank you for choosing Black-Haak heating. Please take a moment to fill out our online survey.