# What are good pressures for r22?

Category:
home and garden
indoor environmental quality

Example R-22 Refrigerant Temperature vs Pressure Data | ||
---|---|---|

Ambient Temperature in °F^{1} | R22 Vapor Pressure at Sea Level | R-22 Low Side Pressure^{2} |

95°F (35°C) | 181.9 psig | 68 psi |

110°F (43.3°C) | 226.4 psig | |

150°F (65.6°C) | 381.7 psig |

Also asked, what should the high and low side pressures be?

The **low**-**side should** be near 30 PSI at 90 degrees Fahrenheit or less. **Pressure** that is too much lower or **higher** shows there is a problem. On a properly working system, **high**-**side pressure** will be about twice the ambient temperature, plus 50 PSI.

Example R-22 Refrigerant Temperature vs Pressure Data | ||
---|---|---|

Ambient Temperature in °F^{1} | R22 Vapor Pressure at Sea Level | R-22 Low Side Pressure^{2} |

32°F (0°C) | 57.5 psig | |

70°F (21.1°C) | 121.5 psig | |

95°F (35°C) | 181.9 psig | 68 psi |

Also asked, what is the suction pressure of r22?

**Pressure** Variables For example, in a refrigeration unit, the refrigerant R-22 should operate at 75 psi on the **suction** side.

IMPORTANT - UNDERSTAND WHAT NORMAL GAUGE READINGS ARE.

AIR TEMP (C) | RED GAUGE (PSI) | BLUE GAUGE (PSI) |
---|---|---|

10 | 50-100 | 20-30 |

20 | 100-150 | 20-30 |

30 | 150-200 | 25-35 |

40 | 180-225 | 25-35 |