PSI Michigan Unlimited Refrigeration and Air Conditioning Service Exam Certification Package

The exam is 55 questions taken over 1 hour, with a minimum passing score of 70%. 

Unlimited refrigeration and air conditioning service covers the diagnosis and servicing of refrigeration equipment and systems and air conditioning equipment and systems employing the refrigeration cycle and unlimited as to thermal capacity or type of refrigerant. Performed troubleshooting & service on cooling and refrigeration equipment in both commercial and residential applications with refrigerant others than those listed as group one; these include, Ammonia and other highly toxic and flammable refrigerants. Serviced condensers, evaporators, compressors, cooling only roof top units, minisplits, deli cases, ice machines, walk and reach in coolers and freezers.

This is a CLOSED BOOK exam. 

all the following references are not allowed in the testing centers:

2015 Michigan Mechanical Code

2015 Michigan Residential Code

Public Act 407 of 2016, Skilled Trades Regulation Act

Public Act 230 of 1972, as amended, State Construction Code Act