The Online Refrigeration Training Program is an advanced, fully online curriculum designed for HVACR technicians, contractors, facilities personnel, and commercial maintenance professionals who want a deeper understanding of commercial refrigeration systems used in supermarkets, restaurants, warehouses, food service, and other commercial environments.
Training begins with the Fundamentals of Refrigeration with Chris Compton and progresses into advanced commercial refrigeration courses with industry expert Dick Wirz. Many of Dick’s original webinar lectures (Courses 441 and 442) are included, giving you the feel of a live classroom experience. Throughout the program, you’ll gain practical, system-wide knowledge covering refrigeration principles, evaporators, condensers, compressors, metering devices, controls, accessories, motors, refrigerants, service procedures, and troubleshooting.
Total Instruction: 86 Hours
Authors: Dick Wirz, Chris Compton, Bob Feathers
The Online Refrigeration Training Program is an advanced, fully online curriculum designed for HVACR technicians, contractors, facilities personnel, and commercial maintenance professionals who want a deeper understanding of commercial refrigeration systems used in supermarkets, restaurants, warehouses, food service, and other commercial environments.
Training begins with the Fundamentals of Refrigeration and progresses into advanced commercial refrigeration courses. Throughout the program, you’ll gain practical, system-wide knowledge covering refrigeration principles, evaporators, condensers, compressors, metering devices, controls, accessories, motors, refrigerants, service procedures, and troubleshooting.
Prerequisite: It’s recommended that you have a solid understanding or working knowledge of HVACR fundamentals before enrolling in this intermediate program.
Required Text: Commercial Refrigeration for Air Conditioning Technicians (included in the program price)
Total Hours: 86
This program is recognized for continuing education hours (CEH) and for NATE continuing education credits
A comprehensive introduction to the refrigeration cycle as applied to both air conditioning and refrigeration systems. The course teaches a systematic approach to diagnosing refrigeration cycle issues by understanding the conditions that control system operation. Instruction aligns with ACCA Quality Installation and ACCA/ASHRAE Standard 180.
CEH Credit: 18 hours (NATE re-certification)
Modules:
A continuation of Refrigeration I, focusing on system accessories, piping design, component applications, and system operation. Builds on foundational refrigeration knowledge to prepare students for more advanced commercial topics. Instruction aligns with ACCA Quality Installation and ACCA/ASHRAE Standard 180.
CEH Credit: 18 hours (NATE re-certification)
Modules:
Covers all major components and principles of commercial refrigeration, comparing them to systems technicians already know from HVAC. The course builds strong troubleshooting skills, including diagnosing the nine most common system issues and using TROT (The Rule of Thumb) when manufacturer data isn’t available.
CEH Credit: 24 hours (NATE re-certification)
Modules:
A continuation of HVACR Commercial Refrigeration-I, covering more advanced applications and systems. Topics include compressor motor controls, retrofitting, recovery, charging, supermarket refrigeration, walk-in coolers/freezers, ice machines, and proper product temperature management. Students also learn when to apply TROT.
CEH Credit: 18 hours (NATE re-certification)
Modules:
This course introduces Low GWP refrigerants, including A2L (slightly flammable) and hydrocarbon (A3) options like propane and isobutane. It explains why legacy refrigerants are being phased out and provides essential guidance on safe handling, transportation, and system operation.
Module:
A deep dive into compressor failure diagnostics through real teardown demonstrations. It walks through multiple semi-hermetic compressor failures from different manufacturers, showing how to identify the root cause of each issue.
Module:
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