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CRST - Certification Application

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CRST Application Fee

You must already have a current (non expired) RETA CARO or CIRO Certification to take the Certified Refrigeration Service Technician (CRST) exam or documentation of at least 4 years of industrial refrigeration experience.

Industrial refrigeration experience documentation must be submitted with the CRST exam application if you do not have a current RETA CARO or CIRO Certification.


You must fill out an CRST exam application and submit to:


Click here for the certification page and corresponding forms.

Refrigerating Engineers & Technicians Association
Toll Free: 844.801.3711 · Phone: 541.497.2955 · Fax: 541.497.2966
1725 Ferry St SW, Albany, OR 97322