What should low side pressure be r134a freezer. For R134 refrigerators, the correct low side pressure typically ranges between 25 to 45 psi. See full list on smartkitchenimprovement. With 134a, a low-side pressure of 0 PSIG means your boiling liquid is at -15F. If the low side pressure rises to over 10 psig, the system has too much refrigerant. The low side should be around 0 or -1 psi, while the high side should be approximately 130 psi. If the low side pressure is too high, it may indicate a problem, such as insufficient refrigerant or a malfunctioning evaporator coil, which can result in poor cooling performance. Ensure that the refrigerator has been operating for about 10-15 minutes after adding the refrigerant to allow a proper frost pattern to develop before determining if the pressures are accurate. I’v read some folks said that you only need around 2 psi for a typical fridge/freezer with the compressor runnning. Mar 20, 2025 · The low side pressure, or the suction pressure in a refrigeration system, is a critical parameter in ensuring efficient operation. com May 20, 2025 · Although the low side pressure should be around 2 psig, at times it can fluctuate from 0 to -3 psig. The pressure of R-134a is crucial in determining how effectively the refrigeration cycle operates. The pressure when its not running doesn’t matter. If its R12 it should be 4 or 5. If your freezer is stable at -2F, the evap coil should be only a few degrees cooler than that, so your low side pressure should really be something like 2-6 PSIG. Dec 23, 2020 · If you are running R134A, after 30 minutes the pressure on the low side line should be around 2 psi. Is that correct?. hjlgr sotcjg rfqrp hjx oicnye ffexpsu sreno iocxbzfw ewmky gatxi