List Of How To Read Automotive Ac Gauges 2022. The key is having a reliable engine vacuum gauge and then knowing how to read it properly. This is hvac training for beginners to the hvac/r trade, not homeowners or those who aren’t properly certified.

The system should be about 25 to 30 psi on the low side and 200 to 250 psi on the high side. The table below shows 7 gauge readouts that you may encounter. Use the gauge readout tool separately or in combination with the.