HVACR Learning Network

EEV Fundamentals Article (with Audio)

The basic concept of the metering device and fluid flow in a mechanical refrigeration system hasn't changed since its development, but employing an EEV ensures that equipment will operate efficiently. Includes audio so you can listen to the article.

Electrical Theory: Relays & Contactors Webinar Replay

This webinar will provide you with a fundamental understanding of control devices, relays, & contactors. You can reference Electrical Theory and Applications for HVACR published by Esco Institute.

Electrical Theory: Start Relays Webinar Replay

This webinar will provide you with a fundamental understanding of start relays. You can reference Electrical Theory and Applications for HVACR published by Esco Institute.

Environmental Regulations Webinar

Environmental System Solutions Webinar

EPA Section 608 Practice Tests

These free practice tests will help you to prepare for the EPA Section 608 examination! There are 50+ questions for each section (Core, Type I, Type II & Type III) as well as a simulated Universal exam. (100 questions, 25 questions in each section)