Compressor Installation Report

Use our interactive installation report to input technical installation data to be reviewed by an HVAC technician.  Or go to to record your installation data.

Compressor Temperatures Chart Guidelines

The temperature range and guidelines shown below can be considered good for the following conditions:

  1. R22 Systems
  2. Air Conditioning Duty (TXV)
  3. SCT equal 95°-115°

Reading from other condition will not fit into all the guidelines.


  • 1. Suction Line Temperature
    • 10°-20° above saturated suction temperature.
  • 2. Motor Barrel Temperature near crankcase
    • 80°-100°
    • a. Below 80° is a possible indication of flooding
    • b. Above 100° is possible indication of motor running too hot from
      • i. Too high heat
      • ii. Not enough suction gas with acceptable superheat to cool motor on low load conditions
  • Three temperatures at the motor barrel are required to find hot spots due to stator drag on the rotor if the motor end bearing has been lost due to flooding
  • 3. Underside of cylinder head
    • 80°-115°
    • a. Below 80° is possible indication for flooding
    • b. Above 115° is an indication of an unloaded cylinder or blown gasket or broken valves
  • 4. Crankcase Temperature
    • 105°-125°
    • a. Below 105° is an indication of flooding
    • b. Above 125° is an indication that the compressor is running too hot- generally caused by the high oil levels
  • 5. Hot Gas line Temperature
    • 160°-200°
    • a. Temperature below 160° after one-minute run time is an indication of flooding
    • b. Temperature above 200° is an indication that the compressor is running too hot
Compressor Installation Report 1

12901 Elmwood Avenue
Cleveland, OH 44111

Phone | 216-941-9200
Fax | 216-941-8801