D-4 License Exam Review Course

D-4 LIMITED HEATING-COOLING JOURNEYPERSON:SCOPE OF WORK:The holder of this license may perform only work limited to the installation, repair, replacement, maintenance or alteration of all refrigeration systems included in food storage, air conditioning and special process systems and only while in the employ of a contractor licensed for such work. The requirements to qualify for this license examination shall be the completion of a registered apprenticeship program or equivalent experience and training.