A manifold gauge set is used to monitor the pressure of the refrigerant during installation and service. This tool is essential for maintaining a Bravo Milano Series 3 Zone 30k BTU system. You can find high-quality gauges in our Other Accessories collection. They allow the technician to see if the system is overcharged or undercharged. Proper use of gauges ensures the longevity of your Condensing Unit. It is a fundamental tool for any HVAC professional or advanced DIYer.