How to Effectively Vacuum Mini Split Lines for Optimal HVAC Performance
To vacuum mini split lines, first turn off the unit and remove the front cover. Then connect a vacuum pump to the suction and discharge ports of the outdoor unit. Open the valves on the gauge manifold to allow the vacuum pump to remove any moisture and air from the system. Allow the vacuum pump to run for at least 30 minutes and monitor the pressure to ensure there are no leaks in the system. Once complete, close the valves on the gauge manifold and remove the vacuum pump from the outdoor unit. Finally, reinstall the front cover and turn on the unit.