AC Pressure Simplified Your Essential Troubleshooting Guide

What should r134a pressures be. The **R134A air conditioner pressure chart** is a precise instrument that maps out the pressure and temperature readings for the ... Note: The most ideal pressure readings are around 150 high and 30 low. Warning: Remember, venting 134a refrigerant into our atmosphere is ... Low side pressure should sit right at 30psi at all times the compressor is on, within a couple psi is OK. High side pressure will change ... AMBIENT TEMPERATURE/RELATIVE HUMIDITY REFERENCE CHART. Relative Outside Air. Humidity. Temp (°F). (%). R-12. Discharge. Temp(F). R-12 Low. Pressure. R-12 High. Check in Heating and Air Conditioning page 24-4; there is a chart for A/C Performance Temperature and Pressure which will provide you the info you are looking ... With the fan on high, it's ~64°. Some things I've read say high side pressure should be roughly double the low side, plus fifty, which would ... The pressure inside the a/c system is a higher number in psi than the outside / ambient temperature number in Fahrenheit and it's above about 70F. The table below shows the comparison between temperature and pressure for R134a. AIR CONDITIONING OFF. AMBIENT TEMPERATURE (CELCIUS), R134a PRESSURE (PSI). 0 ... Here is an R12 chart for psi & dF. Shoot for at or slightly above 32dF refrigerant or 30-32 psi low side for the evaporator to deliver 36-40 dF air. I would suggest finding an R134a Refrigerant Pressure Temperature Calculator on line and figuring out the proper PSI rating for your application ...